Netter, F. H., & Oppenheimer, E. Digestive system: Upper digestive tract.
Cita Chicago (17th ed.)Netter, Frank H., i Ernst Oppenheimer. Digestive System: Upper Digestive Tract.
Cita MLA (8th ed.)Netter, Frank H., i Ernst Oppenheimer. Digestive System: Upper Digestive Tract.
Atenció: Aquestes cites poden no estar 100% correctes.