Ladley, C. (1990). Drugs, society and behavior 90/91 (5th.ed.). Dushkin.
芝加哥风格引文Ladley, Charles. Drugs, Society and Behavior 90/91. 5th.ed. Gilford: Dushkin, 1990.
MLA引文Ladley, Charles. Drugs, Society and Behavior 90/91. 5th.ed. Dushkin, 1990.
警告：这些引文格式不一定是100％准确.