| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Graying of the Church: A Leader's Guide for Older-Adult Ministry in the United Methodist Church | 978-O-88177-4O9-2 (O-88177-4O9-X) | 2004 |
H.G. · Jr. Richard H. Gentzler · R. H. · Richard G · Richard H. · Richard H. Gentzler Jr. · Richard H., Jr. Gentzler