APA Style

P., K, D., M., D, J. (2008). Principles and Practices of Gastrointestinal Oncology (2ndedtion). USA: LWW.

MLA Style

P., Kensen, David., M., Daly, John. "Principles and Practices of Gastrointestinal Oncology". 2ndedtion USA: LWW, 2008. Text.