Cita APA

Sims, M., Purdy, M., & Devenyi, P. (1973). Drug overdoses in a Canadian city.

Citación estilo Chicago

Sims, M., M. Purdy, y P. Devenyi. Drug Overdoses in a Canadian City. 1973.

Cita MLA

Sims, M., M. Purdy, y P. Devenyi. Drug Overdoses in a Canadian City. 1973.