Gregory, I. (1977). Psychiatry: Essentials of clinical practice with examination questions, answer, and comments. Little, Brown.
Čikaški stil citiranja (17. izdanje)Gregory, Ian. Psychiatry: Essentials of Clinical Practice with Examination Questions, Answer, and Comments. Little, Brown, 1977.
MLA način citiranja (9. izdanje)Gregory, Ian. Psychiatry: Essentials of Clinical Practice with Examination Questions, Answer, and Comments. Little, Brown, 1977.
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