G. K. · G. Kowalski · Gary A. Kowalski · Gary M. Kowalski
Bluebridge · Lantern Books · New World Library · Silberschnur · Skinner House Books · Stillpoint Pub
| title | media type | ISBN-13 | year of publica- tion | |
|---|---|---|---|---|
| Dein Tier. Eine empfindsame Seele | Broschiert | 978-3-923781-74-4 | 1992 | |
| Earth Day: An Alphabet Book | Hardcover | 978-1-55896-542-3 | 2009 | |
| Goodbye, Friend: Healing Wisdom for Anyone Who Has Ever Lost a Pet | Paperback | 978-1-883478-22-3 | 2006 | |
| Revolutionary Spirits: The Enlightened Faith of America's Founding Fathers | " | 978-1-933346-30-4 | 2010 | |
| Revolutionary Spirits: The Enlightened Faith of America's Founding Fathers | Hardcover | 978-1-933346-09-0 | 2008 | |
| Souls of Animals | Paperback | 978-0-913299-84-5 | 1991 | |
| The Bible According to Noah: Theology As If Animals Mattered | " | 978-1-930051-32-4 | 2001 | |
| The Souls of Animals | " | 978-1-57731-590-2 | 2007 | |
| The Souls of Animals | " | 978-1-883478-21-6 | 2006 |