Cita APA (7a ed.)

Lewis, R. (1989). European markets in cocaine. Contemporary crises, 13(1), 35-52.

Cita Chicago Style (17a ed.)

Lewis, Roger. "European Markets in Cocaine." Contemporary Crises 13, no. 1 (1989): 35-52.

Cita MLA (9a ed.)

Lewis, Roger. "European Markets in Cocaine." Contemporary Crises, vol. 13, no. 1, 1989, pp. 35-52.