Cita APA (7th ed.)
FRIEDMAN, S. R., LIPTON, D. S., & Stimmel, B. (1991). Cocaine, AIDS, and intravenous drug use. Harrington Park Press.
Cita Chicago (17th ed.)
FRIEDMAN, Samuel R., Douglas S. LIPTON, i Barry Stimmel. Cocaine, AIDS, and Intravenous Drug Use. New York ; London ; Sidney: Harrington Park Press, 1991.
Cita MLA (9th ed.)
FRIEDMAN, Samuel R., et al. Cocaine, AIDS, and Intravenous Drug Use. Harrington Park Press, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.