APA (7th ed.) Citation

Gordis Leon. (2004). Epidemiology (3rd ed.). Elsevier Saunders.

Chicago Style (17th ed.) Citation

Gordis Leon. Epidemiology. 3rd ed. Pennsylvania: Elsevier Saunders, 2004.

MLA (9th ed.) Citation

Gordis Leon. Epidemiology. 3rd ed. Elsevier Saunders, 2004.