Dyfyniad APA

RAY, O., & KSIR, C. (1999). Drugs, society, and human behavior.-- ed.8. WBC/McGraw-Hill.

Dyfyniad Arddull Chicago

RAY, Oakley, and Charles KSIR. Drugs, Society, and Human Behavior.-- Ed.8. Boston: WBC/McGraw-Hill, 1999.

Dyfyniad MLA

RAY, Oakley, and Charles KSIR. Drugs, Society, and Human Behavior.-- Ed.8. WBC/McGraw-Hill, 1999.

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