APA (7th ed.) Citation

Bockus, H. L. R., & Berk, J. E. (1976). Gastroenterology: J. Edward Berk ... [et al.]. Saunders.

Chicago Style (17th ed.) Citation

Bockus, Henry Le Roy, and J. Edward Berk. Gastroenterology: J. Edward Berk ... [et Al.]. Philadelphia: Saunders, 1976.

MLA (9th ed.) Citation

Bockus, Henry Le Roy, and J. Edward Berk. Gastroenterology: J. Edward Berk ... [et Al.]. Saunders, 1976.