Cita APA (7a ed.)

Martindale, W., Reynolds, J. E., & Parfitt, K. (1993). The extra pharmacopoeia (30a ed.). Pharmaceutical Press.

Cita Chicago Style (17a ed.)

Martindale, William, James E.F Reynolds, y Kathleen Parfitt. The Extra Pharmacopoeia. 30a ed. London: Pharmaceutical Press, 1993.

Cita MLA (9a ed.)

Martindale, William, et al. The Extra Pharmacopoeia. 30a ed. Pharmaceutical Press, 1993.