Cita APA (7a ed.)

Netter, F. H., & Oppenheimer, E. (1969). Digestive system: 2, Lower digestive tract ([2nd printing].). Ciba.

Cita Chicago Style (17a ed.)

Netter, Frank H., y Ernst Oppenheimer. Digestive System: 2, Lower Digestive Tract. [2nd printing]. Summit [New Jersey]: Ciba, 1969.

Cita MLA (9a ed.)

Netter, Frank H., y Ernst Oppenheimer. Digestive System: 2, Lower Digestive Tract. [2nd printing]. Ciba, 1969.