APA (7th ed.) Citation

Martindale & Todd, R. (1967). The extra pharmacopoeia (25th ed.). The Pharmaceutical Press.

Chicago Style (17th ed.) Citation

Martindale and R.G Todd. The Extra Pharmacopoeia. 25th ed. London: The Pharmaceutical Press, 1967.

MLA (9th ed.) Citation

Martindale and R.G Todd. The Extra Pharmacopoeia. 25th ed. The Pharmaceutical Press, 1967.

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