Não informado. (1970). Journal of Behavior Therapy and Experimental Psychiatry. Pergamon Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Journal of Behavior Therapy and Experimental Psychiatry. Elmsford, NY: Pergamon Press, 1970.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Journal of Behavior Therapy and Experimental Psychiatry. Pergamon Press, 1970.
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