APA (7th ed.) Citation

Martindale, W., & Reynolds, J. E. F. (1996). The extra pharmacopoeia (31st ed.). Royal Pharmaceutical Society.

Chicago Style (17th ed.) Citation

Martindale, William, and James E. F. Reynolds. The Extra Pharmacopoeia. 31st ed. London: Royal Pharmaceutical Society, 1996.

MLA (9th ed.) Citation

Martindale, William, and James E. F. Reynolds. The Extra Pharmacopoeia. 31st ed. Royal Pharmaceutical Society, 1996.