(1990). Diseases of the digestive system <i>es</i>.
Cita Chicago (17th ed.)Diseases of the Digestive System <i>es</i>. 1990.
Cita MLA (9th ed.)Diseases of the Digestive System <i>es</i>. 1990.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)