Cita APA (7th ed.)

Feldman, M., Friedman, L. S., & Sleisenger, M. H. (2002). Sleisenger & Fordtran's Gastrointestinal and liver disease (7th edition.). Saunders.

Cita Chicago (17th ed.)

Feldman, Mark, Lawrence S. Friedman, i Marvin H. Sleisenger. Sleisenger & Fordtran's Gastrointestinal and Liver Disease. 7th edition. Philadelphia [u.a.]: Saunders, 2002.

Cita MLA (8th ed.)

Feldman, Mark, et al. Sleisenger & Fordtran's Gastrointestinal and Liver Disease. 7th edition. Saunders, 2002.