| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| K9 Personal Protection: A Manual for Training Reliable Protection Dogs | 978-1-55059-229-0 | 2002 | Ruud Haak |
| K9 Professional Tracking: A Complete Manual for Theory and Training | 978-1-55059-223-8 | 2001 | " |
| K9 Schutzhund Training: A Manual for Tracking, Obedience and Protection | 978-1-55059-205-4 | 2000 | " |
| K9 Search and Rescue | 978-1-55059-194-1 | 1999 | " |
| K9 Working Breeds | 978-1-55059-317-4 | 2007 | " |
Resi Gerritsen · Rick Graetz · Rick Gretz · Roos Gerritsen · Rose Gerdts