Cita APA (7a ed.)

SpringerLink (Online service) & Ajani, J. A. (2005). Gastrointestinal cancer. Springer.

Cita Chicago Style (17a ed.)

SpringerLink (Online service) y Jaffer A. Ajani. Gastrointestinal Cancer. New York, NY: Springer, 2005.

Cita MLA (8a ed.)

SpringerLink (Online service) y Jaffer A. Ajani. Gastrointestinal Cancer. Springer, 2005.