Dyfyniad APA

Zastrow, C., & Kirst-Ashman, K. K. (2001). Understanding human behavior and the social environment (5th ed.). Belmont, CA: Brooks/Cole, Thomson Learning.

Dyfyniad Arddull Chicago

Zastrow, Charles., và Karen Kay Kirst-Ashman. Understanding Human Behavior and the Social Environment. 5th ed. Belmont, CA: Brooks/Cole, Thomson Learning, 2001.

Dyfyniad MLA

Zastrow, Charles., và Karen Kay Kirst-Ashman. Understanding Human Behavior and the Social Environment. 5th ed. Belmont, CA: Brooks/Cole, Thomson Learning, 2001.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.