Cita APA (7a ed.)

Viola Malet, M., Amorín, R., & Barreiro, C. (2006). Rectum Carcinoid Tumors.

Cita Chicago Style (17a ed.)

Viola Malet, Marcelo, Rosario Amorín, y Claudia Barreiro. Rectum Carcinoid Tumors. 2006.

Cita MLA (9a ed.)

Viola Malet, Marcelo, et al. Rectum Carcinoid Tumors. 2006.