APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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