MLA

M. A. Hayat, and M. A Hayat. Gastrointestinal Carcinoma. Springer Netherlands, 2009.

APA

M. A. Hayat, M. A. Hayat, & Hayat, M. A. (2009). Gastrointestinal Carcinoma. Springer Netherlands.

Chicago

M. A. Hayat., and M. A Hayat. Gastrointestinal Carcinoma. : Springer Netherlands, 2009.