Cita APA (7a ed.)

Kingery, P. M., Alford, A. A., & Coggeshall, M. B. (1999). Marijuana use among youth - Epidemiologic evidence from the US and other nations. School psychology international, 20(1), 9-21.

Cita Chicago Style (17a ed.)

Kingery, Paul M., Aaron A. Alford, y Mark B. Coggeshall. "Marijuana Use Among Youth - Epidemiologic Evidence from the US and Other Nations." School Psychology International 20, no. 1 (1999): 9-21.

Cita MLA (8a ed.)

Kingery, Paul M., et al. "Marijuana Use Among Youth - Epidemiologic Evidence from the US and Other Nations." School Psychology International, vol. 20, no. 1, 1999, pp. 9-21.