APA (7th ed.) Citation

SpringerLink (Online service), Shaffer, E. A., & Thomson, A. B. R. (1989). Modern concepts in gastroenterology. Plenum Medical Book Company.

Chicago Style (17th ed.) Citation

SpringerLink (Online service), Eldon A. Shaffer, and A. B. R. Thomson. Modern Concepts in Gastroenterology. New York: Plenum Medical Book Company, 1989.

MLA (9th ed.) Citation

SpringerLink (Online service), et al. Modern Concepts in Gastroenterology. Plenum Medical Book Company, 1989.