| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Virtual Addiction: Help for Netheads, Cyberfreaks, and Those Who Love Them | 978-1-57224-172-5 (1-57224-172-1) | 1999 |
D D · D. G. · D. P. · D. PH. · David D. · David G. · David Greenfield · David P. · P.G. · P. Greenfield · Ph.D.