| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Good Gut Guide: Help for IBS, Ulcerative Colitis, Crohn's Disease, Diverticulitis, Food Allergies and Other Gut Problems | 978-0-00-713805-0 (0-00-713805-9) | 2003 |
| Xgood Gut Guide Cygnus | 978-0-00-768520-2 (0-00-768520-3) | 2003 |
Stefan Zenker · Stefan Zwanzger · Stefano Zangrando · Stephan Zinser · Steven Zahniser