Cita APA (7th ed.)

Merck Research Laboratories & Beers, M. H. (2006). The Merck manual of diagnosis and therapy (18th ed.). Merck Research Laboratories.

Cita Chicago (17th ed.)

Merck Research Laboratories i Mark H. Beers. The Merck Manual of Diagnosis and Therapy. 18th ed. Whitehouse Station, N.J: Merck Research Laboratories, 2006.

Cita MLA (9th ed.)

Merck Research Laboratories i Mark H. Beers. The Merck Manual of Diagnosis and Therapy. 18th ed. Merck Research Laboratories, 2006.