Cite a source with one author

First and subsequent citations

Within a paragraph, omit the year in citations after the first one if no confusion with other studies will result:

Fisher (1999) administered a questionnaire… Fisher’s results indicated…

[new paragraph] The questionnaire administered by Fisher (1999) was used by…

A source with 1 or 2 authors

Cite name(s) in first and all subsequent citations:

(Carter & Dunbar-Odom, 2009)

Carter and Dunbar-Odom (2009)

Authors with same surname

Use initials even if the years are different:

D. Baldwin (2001) and M. L. Baldwin (1999)