| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2007 | 978-0-9790285-0-2 | Jack J. Phillips | Proving the Value of Meetings and Events; How and Why to Measure ROI |
| '' | 978-0-9790285-1-9 | Ph.D. Patricia Pulliam Phillips · Ph.D. Jack J. Phillips | Proving the Value of HR-ROI Case Studies |
| 2010 | 978-0-9790285-3-3 | Patricia Pulliam · Phillips, Ja Phillips | Proving the Value of HR: ROI Case Studies |