Pryor, A. D., Pappas, T. N., & Branch, M. S. (2010). Preface. Gastrointestinal Bleeding: A Practical Approach to Diagnosis and Management. https://doi.org/10.1007/978-1-4419-1693-8

Pryor, A. D., T. N. Pappas, and M. S. Branch. “Preface.” Gastrointestinal Bleeding: A Practical Approach to Diagnosis and Management, December 1, 2010. https://doi.org/10.1007/978-1-4419-1693-8.

Pryor AD, Pappas TN, Branch MS. Preface. Gastrointestinal Bleeding: A Practical Approach to Diagnosis and Management. 2010 Dec 1;

Pryor, A. D., et al. “Preface.” Gastrointestinal Bleeding: A Practical Approach to Diagnosis and Management, Dec. 2010. Scopus, doi:10.1007/978-1-4419-1693-8.

Pryor AD, Pappas TN, Branch MS. Preface. Gastrointestinal Bleeding: A Practical Approach to Diagnosis and Management. 2010 Dec 1;