APA (7th ed.) Citation

Martindale, W., & Todd, R. G. (1967). Extra pharmacopoeia: Incorporating Squire's Companion (25th ed.). Pharmaceutical P..

Chicago Style (17th ed.) Citation

Martindale, William, and Robert Gibson Todd. Extra Pharmacopoeia: Incorporating Squire's Companion. 25th ed. London: Pharmaceutical P., 1967.

MLA (9th ed.) Citation

Martindale, William, and Robert Gibson Todd. Extra Pharmacopoeia: Incorporating Squire's Companion. 25th ed. Pharmaceutical P., 1967.

Warning: These citations may not always be 100% accurate.