Most writing and grammar questions can be answered with the current edition of the Chicago Manual of Style (CMOS). Adhering to this guide as a standard will prevent minor components of writing from becoming glaring inconsistencies. As the CMOS is not readily accessible to the public, some essential standards will be explained below.
not
Use of the comma: The comma, aside from its technical uses in scientific, bibliographical, and other contexts, indicates the smallest break in sentence structure. It usually denotes a slight pause. In formal prose, however, logical considerations come first. Effective use of the comma involves good judgement, with the goal being ease of reading.
Commas in pairs: Whenever a comma is placed before an element to set it off from the surrounding text (such as “1920” or “Minnesota” in the examples below), a second comma is required if the phrase or sentence continues beyond the element being set off. This principle applies to many of the uses for commas described in this section. An exception is made for commas within the title of a work (third example); such commas are considered to be independent of the surrounding sentence.
but
Serial commas: Items in a series are normally separated by commas. When a conjunction joins the last two elements in a series of three or more, a comma—known as the serial or series comma or the Oxford comma—should appear before the conjunction. The Chicago Manual of Style strongly recommends this widely practiced usage since it prevents ambiguity. If the last element consists of a pair joined by and, the pair should still be preceded by a serial comma and the first and (as in the last two examples below). In the rare example where the serial comma does not prevent ambiguity, it may be necessary to reword.
For further clarification, refer to the most recent edition of the Chicago Manual of Style.
Chicago’s general rule—zero through one hundred: In nontechnical contexts, Chicago advises spelling out whole numbers from zero through one hundred and certain round multiples of those numbers.
Numbers beginning a sentence: When a number begins a sentence, it is always spelled out. To avoid awkwardness, a sentence can often be recast. In the first example, some writers prefer the term one hundred and ten; Chicago’s preference is to omit the and.
or
If a year must begin a sentence, spell it out; it is usually preferable, however, to reword. Avoid and in such expressions as two thousand one, two thousand ten, two thousand fifty, and the like.
or, better
Ordinals: The general rule applies to ordinal as well as cardinal numbers. Note that Chicago prefers, for example, 122nd and 123rd (with an n and an r) over 122d and 123d. The latter are common especially in legal style. The letters in ordinal numbers should not appear as superscripts (e.g., not 122nd but 122nd).
In the expression “nth degree,” Chicago style is to italicize the n.
For further clarification, refer to the most recent edition of the Chicago Manual of Style.
Professional titles are capitalized when they immediately precede a personal name and are thus used as part of the name (traditionally replacing the title holder’s first name). In formal prose and other generic text, titles are normally lowercased when following a name or used in place of a name. Note that once a title has been given, it need not be repeated each time a person’s name is mentioned.
Exceptions to the general rule. In promotional or ceremonial contexts such as a displayed list of donors in the front matter of a book or a list of corporate officers in an annual report, titles are usually capitalized even when following a personal name. Exceptions may also be called for in other contexts for reasons of courtesy or diplomacy.
A title used alone, in place of a personal name, is capitalized only in such contexts as a toast or a formal introduction, or when used in direct address.
Academic Designations: Terms denoting student status are lower-cased.
Freshman or first-year student sophomore junior senior
Names of degrees, fellowships, and the like are lowercased when referred to generically.
Civic and academic honors: Titles denoting civic or academic honors are capitalized when following a personal name.
Robert Bodnar, Fellow of the Royal Society of Canada; the fellows
Abbreviations for academic degrees: Chicago recommends omitting periods in abbreviations of academic degrees (BA, DDS, etc.) unless they are required for reasons of tradition or consistency with, for example, a journal’s established style. In the following list of some of the more common degrees, periods are shown only where uncertainty might arise as to their placement. Spelled-out terms, often capitalized in institutional settings (and on business cards and other promotional items) should be lowercased in normal prose.
BA – bachelor of arts
BS – bachelor of science
DDS – doctor of dental surgery
DMD – dentariae medicinae doctor (doctor of dental medicine)
DPT – doctor of physical therapy
EdD – doctor of education
Hon.- honorary degree
JD – juris doctor (doctor of law)
MA – master of arts
MBA – master of business administration
MD – medicinae doctor (doctor of medicine)
MEd – educationis magister (master of education)
MFA – master of fine arts
MPH – master of public health
MS – master of science
MSN – master of science in nursing
MSOT – master of occupational therapy
PhD – philosophiae doctor (doctor of philosophy)
These designations are set off by commas when they follow a personal name.
Ariel Z. Lee, JD, attended the University of Chicago Law School.
Class years in names: When writing a year of when an alumnus graduated from AIC into their name, there are a few key things to keep in mind. If an alumnus earned a bachelor’s degree from the College, their name would have the last two digits of the year they graduated preceded by an apostrophe. The year is not offset by a comma if the subject only has a bachelor’s degree. When an alumnus has an advanced degree, it should be offset by a comma no matter what. The year they earned that degree should follow the abbreviation.
Joseph Berry ’92 has been named interim executive director of the local YMCA.
Mark Roberts, MEd ’03, has been named superintendent of Chicago Public Schools.
Gabriella McBride ’12, MBA ’15, PhD ’21, has taken a position at Yale University.
For further clarification, refer to the most recent edition of the Chicago Manual of Style.
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