Cita APA

Henry, D. A., & McEwen, J. (1987). Monitoring the safety of over the counter drugs.

Citación estilo Chicago

Henry, D A., y J. McEwen. Monitoring the Safety of Over the Counter Drugs. 1987.

Cita MLA

Henry, D A., y J. McEwen. Monitoring the Safety of Over the Counter Drugs. 1987.