Cita APA (7a ed.)

Johnston, L. D., Bachman, J. G., & O'Malley, P. M. (1987). National trends in drug use and related factors among American high school students and young adults, 1975-1986. National Institute on Drug Abuse.

Cita Chicago Style (17a ed.)

Johnston, Lloyd D., Jerald G. Bachman, y Patrick M. O'Malley. National Trends in Drug Use and Related Factors Among American High School Students and Young Adults, 1975-1986. [Erscheinungsort nicht ermittelbar]: National Institute on Drug Abuse, 1987.

Cita MLA (9a ed.)

Johnston, Lloyd D., et al. National Trends in Drug Use and Related Factors Among American High School Students and Young Adults, 1975-1986. National Institute on Drug Abuse, 1987.