APA (7th ed.) Citation

Merck & Co. (1961). The Merck manual of diagnosis and therapy. Merck.

Chicago Style (17th ed.) Citation

Merck & Co. The Merck Manual of Diagnosis and Therapy. Rahway, NJ: Merck, 1961.

MLA (9th ed.) Citation

Merck & Co. The Merck Manual of Diagnosis and Therapy. Merck, 1961.