APA (7th ed.) Citation

Netter, F. H., & Oppenheimer, E. Digestive system. Ciba Pharmaceutical Company.

Chicago Style (17th ed.) Citation

Netter, Frank H., and Ernst Oppenheimer. Digestive System. Summit: Ciba Pharmaceutical Company.

MLA (8th ed.) Citation

Netter, Frank H., and Ernst Oppenheimer. Digestive System. Ciba Pharmaceutical Company.

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