APA (7th ed.) Citation

Colledge, N. R., Ralston, S., & Walker, B. R. (2010). Davidson's principles and practice of medicine (21st ed.). Elsevier.

Chicago Style (17th ed.) Citation

Colledge, Nicki R., Stuart Ralston, and Brian R. Walker. Davidson's Principles and Practice of Medicine. 21st ed. London: Elsevier, 2010.

MLA (9th ed.) Citation

Colledge, Nicki R., et al. Davidson's Principles and Practice of Medicine. 21st ed. Elsevier, 2010.