Goodwin, L. R. (1975). Psycho-social motivations for the initial, continuing, and discontinuing use of marihuana and the psychedelic drugs. Xerox Univ. Microfilms.
Chicago-Zitierstil (17. Ausg.)Goodwin, Lloyd R. Psycho-social Motivations for the Initial, Continuing, and Discontinuing Use of Marihuana and the Psychedelic Drugs. Ann Arbor, Mich: Xerox Univ. Microfilms, 1975.
MLA-Zitierstil (9. Ausg.)Goodwin, Lloyd R. Psycho-social Motivations for the Initial, Continuing, and Discontinuing Use of Marihuana and the Psychedelic Drugs. Xerox Univ. Microfilms, 1975.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.