Cita APA (7th ed.)
ebrary, Inc, Richter, J. E., & Castell, D. O. (2012). The esophagus (5th ed.). Blackwell.
Cita Chicago (17th ed.)
ebrary, Inc, Joel E. Richter, i Donald O. Castell. The Esophagus. 5th ed. Chichester, West Sussex: Blackwell, 2012.
Cita MLA (9th ed.)
ebrary, Inc, et al. The Esophagus. 5th ed. Blackwell, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.