Dyfyniad APA

Levinthal, C. F. (2008). Drugs, behavior, and modern society (5th ed.). Pearson/Allyn & Bacon.

Dyfyniad Arddull Chicago

Levinthal, Charles F. Drugs, Behavior, and Modern Society. 5th ed. Boston: Pearson/Allyn & Bacon, 2008.

Dyfyniad MLA

Levinthal, Charles F. Drugs, Behavior, and Modern Society. 5th ed. Pearson/Allyn & Bacon, 2008.

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