Cita APA

Beers, M. H., & Porter, R. S. (2006). The Merck manual of diagnosis and therapy (18. edition --.). Whitehouse Station, N.J.: Merck Research Laboratories.

Citación estilo Chicago

Beers, Mark H., y Robert S. Porter. The Merck Manual of Diagnosis and Therapy. 18. edition --. Whitehouse Station, N.J.: Merck Research Laboratories, 2006.

Cita MLA

Beers, Mark H., y Robert S. Porter. The Merck Manual of Diagnosis and Therapy. 18. edition --. Whitehouse Station, N.J.: Merck Research Laboratories, 2006.