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Citing Sources with Same Author and Date

Same Author and Same Year of Publication

If there are two different sources by the same author in the same year, put the sources in alphabetical order and add a lower-case letter after the year (this will correspond with the matching reference).

Parenthetical Citation Example

(Jones, 2001a, p. 106)
(Jones, 2001b, p. 13)

Narrative Citation Example

Jones (2001a) … (p. 106)
Jones (2001b) … (p. 13)

Corresponding References Example

Jones, A. (2001a). This book is not real. Penguin Press. 
Jones, A. (2001b). Another fake book for the sake of an example. Oxford University Press.