Johnston, L. D., O'Malley, P. M., & Bachman, J. G. (1987). National trends in drug use and related factors among American high school students and young adults, 1975 - 1986. DHHS publication.
Chicago-Zitierstil (17. Ausg.)Johnston, Lloyd D., Patrick M. O'Malley, und Jerald G. Bachman. "National Trends in Drug Use and Related Factors Among American High School Students and Young Adults, 1975 - 1986." DHHS Publication 1987.
MLA-Zitierstil (9. Ausg.)Johnston, Lloyd D., et al. "National Trends in Drug Use and Related Factors Among American High School Students and Young Adults, 1975 - 1986." DHHS Publication, 1987.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.