Tohutoro APA (7th ed.)
Poppen, R. (1995). Joseph Wolpe. Sage Publications.
Tohutoru Kātū Chicago (17th ed.)
Poppen, Roger. Joseph Wolpe. London ; Thousand Oaks, Calif.: Sage Publications, 1995.
Tohutoro MLA (9th ed.)
Poppen, Roger. Joseph Wolpe. Sage Publications, 1995.
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