APA (7th ed.) Citation

ScienceDirect (Online service), Root, W. S., & Hofmann, F. G. (1965). Physiological pharmacology: A comprehensive treatise. Academic Press.

Chicago Style (17th ed.) Citation

ScienceDirect (Online service), Walter S. Root, and Frederick G. Hofmann. Physiological Pharmacology: A Comprehensive Treatise. New York: Academic Press, 1965.

MLA (9th ed.) Citation

ScienceDirect (Online service), et al. Physiological Pharmacology: A Comprehensive Treatise. Academic Press, 1965.