APA (7th ed.) Citation

Stacy, A. W., Newcomb, M. D., & Bentler, P. M. (1991). Cognitive motivation and drug use: A 9-year longitudinal study. Journal of abnormal psychology, 100(4), 502-515.

Chicago Style (17th ed.) Citation

Stacy, Alan W., Michael D. Newcomb, and Peter M. Bentler. "Cognitive Motivation and Drug Use: A 9-year Longitudinal Study." Journal of Abnormal Psychology 100, no. 4 (1991): 502-515.

MLA (9th ed.) Citation

Stacy, Alan W., et al. "Cognitive Motivation and Drug Use: A 9-year Longitudinal Study." Journal of Abnormal Psychology, vol. 100, no. 4, 1991, pp. 502-515.