American Psychological Association. (2010). Publication manual of the American Psychological Association (Sixth edition.). American Psychological Association.
Παραπομπή σε μορφή Chicago (17η εκδ.)American Psychological Association. Publication Manual of the American Psychological Association. Sixth edition. Washington, DC: American Psychological Association, 2010.
Παραπομπή σε μορφή MLA (8th εκδ.)American Psychological Association. Publication Manual of the American Psychological Association. Sixth edition. American Psychological Association, 2010.
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