Books or Book Chapters:

Somatostatin, corticotrophin releasing hormone and growth hormone releasing hormone in gastrointestinal tract. In Pholpramool C, Sudsuang R (eds.), Proceedings of the First Congress of the Asian and Oceanian Physiological Societies. The Physiological Society. 1987, pp 159 - 66 (with Arimura A, et al).

Massive rectal bleeding: What is a rational approach. In Barkin JS, Rogers AI (eds.), Difficult Decisions in Digestive Diseases. Year Book Medical Publishers, Inc. 1988, pp 427 - 432 (with N.M. Agrawal).

Pancreatic physiology; Chronic pancreatitis; Pancreatic tumors; Cystic fibrosis. In Aktan H (ed.), Gastroenteroloji. Macro Publishers, Inc. 1988, pp 367 - 389 (In Turkish).

Self-assessment Examination Answers and Annotated Bibliography by Self-Assessment Examination Committee members of American College of Gastroenterology. Gower Medical Publishing, Ltd. 1991, 1993, 1995 and 1997.

Colorectal cancer screening. In Iammarino NK, Werstein AC (eds.), Improving Cancer Screening. Texas Cancer Council. 1993, pp 97-122.

The 5-Minute Clinical Consult (Book and data base). In Griffith HW, Dambro M (eds.), Consultant in 12 different chapters in gastroenterology, Board of Consultants. Lea & Febiger, Philadelphia and London. 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 and 2002, 2003, 2004, 2005, 2006.

Endocrine tumors of gastrointestinal tract. In Graham DY, Ertan A (eds.), Current Practice of Medicine, Gastroenterology. Current Medicine, Philadelphia. 1996, 1998, and 2000. Volume IV and Chapter 11.

Cholelithiasis and associated conditions: Gallbladder and Biliary, Gallstone Disease and its Complications. In DiBaise JK (ed.), Gastroenterology and Hepatology - Pearls of Wisdom. Boston Medical Publishing Corp. 2000, pp 24 - 37 (with Balachandar G., Raijman I., Trowers E.A.)

Best Practice of Medicine, Gotto A (ed). Gastroenterology, Ertan A (ed). Internet base textbook. Praxis Press Inc, 2001.