| title | ISBN-13 | year of publication |
|---|---|---|
| Encyclopedia of Associations | 978-1-4144-3361-5 | 2009 |
| Encyclopedia of Associations: An Associations Unlimited Reference: 1 | 978-1-4144-3356-1 | 2008 |
| Encyclopedia of Associations: An Associations Unlimited Reference | 978-1-4144-2011-0 | 2008 |
| Encyclopedia of Associations: Geographic and Executive Indexes | 978-1-4144-3360-8 | 2008 |
| Encyclopedia of Associations: National Organizations of the U.S. | 978-1-4144-4032-3 | 2009 |
A. H. · A Harper · k.A. · K. A. Harper · K. H. · K. Harper · Kristy Harper