American Psychological Association. (1927). Psychological abstracts: Nonevaluative summaries of the serial and book literture in psychology and related disciplines. American Psychological Association.
Παραπομπή σε μορφή Chicago (17η εκδ.)American Psychological Association. Psychological Abstracts: Nonevaluative Summaries of the Serial and Book Literture in Psychology and Related Disciplines. Whashington: American Psychological Association, 1927.
Παραπομπή σε μορφή MLA (9th εκδ.)American Psychological Association. Psychological Abstracts: Nonevaluative Summaries of the Serial and Book Literture in Psychology and Related Disciplines. American Psychological Association, 1927.
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