Cita APA (7a ed.)

(1989). The Merck index: An encyclopedia of chemicals drugs and biologicals (11th edition.). Merck.

Cita Chicago Style (17a ed.)

The Merck Index: An Encyclopedia of Chemicals Drugs and Biologicals. 11th edition. New Jersey: Merck, 1989.

Cita MLA (8a ed.)

The Merck Index: An Encyclopedia of Chemicals Drugs and Biologicals. 11th edition. Merck, 1989.