APA

Perez A., Saltzman J. R., Carr-Locke D. L., Brooks D. C., Osteen R. T., Zinner M. J., Ashley S. W. & Whang E. E. (20031009). Benign nonampullary duodenal neoplasms. : Journal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract.

Chicago

Perez Alexander, Saltzman John R, Carr-Locke David L, Brooks David C, Osteen Robert T, Zinner Michael J, Ashley Stanley W and Whang Edward E. 20031009. Benign nonampullary duodenal neoplasms. : Journal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract.

Harvard

Perez A., Saltzman J. R., Carr-Locke D. L., Brooks D. C., Osteen R. T., Zinner M. J., Ashley S. W. and Whang E. E. (20031009). Benign nonampullary duodenal neoplasms. : Journal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract.

MLA

Perez Alexander, Saltzman John R, Carr-Locke David L, Brooks David C, Osteen Robert T, Zinner Michael J, Ashley Stanley W and Whang Edward E. Benign nonampullary duodenal neoplasms. : Journal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract. 20031009.