Zastrow, C., & Kirst-Ashman, K. K. (2001). Understanding human behavior and the social environment (Fifth edition.). Brooks/Cole, Thomson Learning.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रZastrow, Charles, और Karen Kay Kirst-Ashman. Understanding Human Behavior and the Social Environment. Fifth edition. Belmont, California: Brooks/Cole, Thomson Learning, 2001.
एमएलए (9वां संस्करण) प्रशस्ति पत्रZastrow, Charles, और Karen Kay Kirst-Ashman. Understanding Human Behavior and the Social Environment. Fifth edition. Brooks/Cole, Thomson Learning, 2001.
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