Cita APA (7a ed.)

Shaffer, J. W., Kinlock, T. W., & Nurco, D. N. (1984). A new classification of narcotic addicts based on type and extent of criminal activity. Comprehensive psychiatry, 25(3), 315-328. doi:10.1016/0010-440X(84)90064-6

Cita Chicago Style (17a ed.)

Shaffer, John W., Timothy W. Kinlock, y David N. Nurco. "A New Classification of Narcotic Addicts Based on Type and Extent of Criminal Activity." Comprehensive Psychiatry 25, no. 3 (1984): 315-328. https://doi.org/10.1016/0010-440X(84)90064-6.

Cita MLA (9a ed.)

Shaffer, John W., et al. "A New Classification of Narcotic Addicts Based on Type and Extent of Criminal Activity." Comprehensive Psychiatry, vol. 25, no. 3, 1984, pp. 315-328, https://doi.org/10.1016/0010-440X(84)90064-6.