Richards, L. G., & Langer, J. H. (1972). Drug-taking in youth: An overview of social, psychological and educational aspects. U.S. Dept. of Justice.
Chicago-Zitierstil (17. Ausg.)Richards, Louise G., und John H. Langer. Drug-taking in Youth: An Overview of Social, Psychological and Educational Aspects. Washington, D. C: U.S. Dept. of Justice, 1972.
MLA-Zitierstil (9. Ausg.)Richards, Louise G., und John H. Langer. Drug-taking in Youth: An Overview of Social, Psychological and Educational Aspects. U.S. Dept. of Justice, 1972.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.