APA (7th ed.) Citation

(1990). Diseases of the digestive system <i>es</i>.

Chicago Style (17th ed.) Citation

Diseases of the Digestive System <i>es</i>. 1990.

MLA (9th ed.) Citation

Diseases of the Digestive System <i>es</i>. 1990.

Warning: These citations may not always be 100% accurate.