Cita APA (7a ed.)

Ladley, C. (1990). Drugs, society and behavior 90/91 (5th.ed.). Dushkin.

Cita Chicago Style (17a ed.)

Ladley, Charles. Drugs, Society and Behavior 90/91. 5th.ed. Gilford: Dushkin, 1990.

Cita MLA (9a ed.)

Ladley, Charles. Drugs, Society and Behavior 90/91. 5th.ed. Dushkin, 1990.