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APA (7th ed.) referencing guide (Online): Author with two or more works cited in the same year

Mae'r dudalen hon hefyd ar gael yn Gymraeg

In text citations

Use lower case letters (a, b, etc.) to distinguish between works published in the same year by the same author(s).

Koriat (2008a) states that… this was supported by Koriat (2008b) …

Reference list

The suffixes are assigned in the reference list, where these kind of references are ordered alphabetically by title (of the article, chapter, or complete work).

​Koriat, A. (2008a). Easy comes, easy goes? The link between learning and remembering and its exploitation            in metacognition. Memory & Cognition, 36(2), 416-428.

Koriat, A. (2008b). Subjective confidence in one's answers: The consensuality principle. Journal of Experimental Psychology: ​Learning, Memory, and Cognition, 34(4), 945-959.