APA (7th ed.) Citation

Martindale, W., Reynolds, J. E., & Prasad, A. B. (1982). The extra pharmacopoeia (28th ed.). Pharmaceutical Press.

Chicago Style (17th ed.) Citation

Martindale, William, James E.F Reynolds, and Anne B. Prasad. The Extra Pharmacopoeia. 28th ed. London: Pharmaceutical Press, 1982.

MLA (9th ed.) Citation

Martindale, William, et al. The Extra Pharmacopoeia. 28th ed. Pharmaceutical Press, 1982.