Cita APA (7a ed.)

Korf, D. J., Reijneveld, S. A., & Toet, J. (1994). Estimating the number of Heroin users: A review of methods and empirical findings from the Netherlands. International journal of the addictions, 29(11), 1393-1417.

Cita Chicago Style (17a ed.)

Korf, Dirk J., Sijmen A. Reijneveld, y Jacob Toet. "Estimating the Number of Heroin Users: A Review of Methods and Empirical Findings from the Netherlands." International Journal of the Addictions 29, no. 11 (1994): 1393-1417.

Cita MLA (8a ed.)

Korf, Dirk J., et al. "Estimating the Number of Heroin Users: A Review of Methods and Empirical Findings from the Netherlands." International Journal of the Addictions, vol. 29, no. 11, 1994, pp. 1393-1417.