Cita APA (7a ed.)

Riddle, J. M. (1992). Quid pro quo: Studies in the history of drugs. Variorum.

Cita Chicago Style (17a ed.)

Riddle, John M. Quid Pro Quo: Studies in the History of Drugs. Aldershot: Variorum, 1992.

Cita MLA (9a ed.)

Riddle, John M. Quid Pro Quo: Studies in the History of Drugs. Variorum, 1992.