Cita APA (7th ed.)

Gershman, G., & Ament, M. E. (2007). Practical pediatric gastrointestinal endoscopy. Blackwell Pub..

Cita Chicago (17th ed.)

Gershman, George, i Marvin Earl Ament. Practical Pediatric Gastrointestinal Endoscopy. Malden, MA ; Oxford: Blackwell Pub., 2007.

Cita MLA (9th ed.)

Gershman, George, i Marvin Earl Ament. Practical Pediatric Gastrointestinal Endoscopy. Blackwell Pub., 2007.