List the author's last name, a comma, the author's first name and a period. Omit "Ph.D." from your citation. For example, a book written by "John Smith, Ph.D." would appear as follows:
Smith, John.
Continue with the rest of the citation. For example, a book written by "John Smith, Ph.D." might appear in your reference list as follows:
Smith, John. Title in Italics. City of Publication: Publisher, year. Medium of Publication.
For example:
Smith, John. The Greatness of Shakespeare. Boston: Doubleday, 1968. Print.
Omit any titles such as "Ph.D." from in-text citations as well. The book above written by "John Smith, Ph.D." would be cited in the text as follows:
(Smith page number)
For example:
One mid-century author averred that Shakespeare was "the very best writer of his time, better even than Christopher Marlowe" (Smith 156).