Cita APA (7a ed.)

Merck Research Laboratories & Merck & Co. (1968). The Merck index: An encyclopedia of chemicals, drugs and biologicals. Published by Merck Research Laboratories Division of Merck & Co.

Cita Chicago Style (17a ed.)

Merck Research Laboratories y Merck & Co. The Merck Index: An Encyclopedia of Chemicals, Drugs and Biologicals. Whitehouse Station (N.J.): Published by Merck Research Laboratories Division of Merck & Co, 1968.

Cita MLA (9a ed.)

Merck Research Laboratories y Merck & Co. The Merck Index: An Encyclopedia of Chemicals, Drugs and Biologicals. Published by Merck Research Laboratories Division of Merck & Co, 1968.