Cita APA (7th ed.)

Martindale. (1955). The extra pharmacopceia (23rd ed.). Pharmaceutical Press.

Cita Chicago (17th ed.)

Martindale. The Extra Pharmacopceia. 23rd ed. London: Pharmaceutical Press, 1955.

Cita MLA (9th ed.)

Martindale. The Extra Pharmacopceia. 23rd ed. Pharmaceutical Press, 1955.