Dokumentuaren aipamena

APA (7th ed.) Zitazioa
Singer, E. (1970). Key concepts in psychotherapy (2nd ed.). Basic books.
Chicago Style (17th ed.) Zitazioa
Singer, Erwin. Key Concepts in Psychotherapy. 2nd ed. New York: Basic books, 1970.
MLA (9th ed.) Zitazioa
Singer, Erwin. Key Concepts in Psychotherapy. 2nd ed. Basic books, 1970.
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