Cita APA (7a ed.)

Courtwright, D. T. (1982). Dark paradise: Opiate addiction in America before 1940. Harvard Univ. Pr.

Cita Chicago Style (17a ed.)

Courtwright, David T. Dark Paradise: Opiate Addiction in America Before 1940. Cambridge, Mass. [u.a.]: Harvard Univ. Pr, 1982.

Cita MLA (8a ed.)

Courtwright, David T. Dark Paradise: Opiate Addiction in America Before 1940. Harvard Univ. Pr, 1982.