May 29, 2008: Issue 241
In general, use periods in academic degrees:
Ph.D.
M.D.
B.A.
The exception is MBA. Most reference books leave the periods out of that one, so we will, too.
In professional certifications, on the other hand, don’t use periods:
CDE
CKD
Sometimes this will result in mixed formats in a single byline:
Jane Johnson, Ph.D., CDE
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