MLA

Aurora D. Pryor, et al. Gastrointestinal Bleeding. Springer New York, 2010.

APA

Aurora D. Pryor, A. D. Pryor, Branch, M. Stanley, Pappas, T. N, Pappasodore N, P. N, & Pryor, A. D. (2010). Gastrointestinal Bleeding. Springer New York.

Chicago

Aurora D. Pryor, Malcolm Stanley Branch, Theodore N Pappas, Pappasodore N, and Aurora D Pryor. Gastrointestinal Bleeding. : Springer New York, 2010.