| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Contented Cows Give Better Milk | 978-1-890651-10-7 (1-890651-10-9) | 2000 | Richard Hadden |
| Contented Cows Moove Faster | 978-0-9788160-4-9 (0-9788160-4-8) | 2007 | " |
| Contented Cows Still Give Better Milk, Revised and Expanded: The Plain Truth about Employee Engagement and Your Bottom Line | 978-1-118-29273-0 (1-118-29273-1) | 2012 | " |
R. Brent and Company · Saltillo Press · Wiley