Primedia · Clymer Publishing · Price Digests
| title | ISBN-13 (ISBN-10) | year of publica- tion |
|---|---|---|
| Grounds Maintenance Equipment Blue Book 2006 | 978-1-59969-018-6 (1-59969-018-7) | 2006 |
| Official Tractor Blue Book 2007 | 978-1-59969-063-6 (1-59969-063-2) | 2006 |
| Official Tractor Blue Book 2008 | 978-1-59969-161-9 (1-59969-161-2) | 2007 |