Cita APA (7a ed.)

Leone, L., & Burkhart, G. (2012). Guidelines for the evaluation of drug prevention: A manual for programme planners and evaluators EMCDDA manuals. doi:10.2810/51268

Cita Chicago Style (17a ed.)

Leone, Liliana, y Gregor Burkhart. "Guidelines for the Evaluation of Drug Prevention: A Manual for Programme Planners and Evaluators." EMCDDA Manuals 2012. https://doi.org/10.2810/51268.

Cita MLA (9a ed.)

Leone, Liliana, y Gregor Burkhart. "Guidelines for the Evaluation of Drug Prevention: A Manual for Programme Planners and Evaluators." EMCDDA Manuals, 2012, https://doi.org/10.2810/51268.