Robert Granfield · Robert Greenberg · Robert Greenberger · Robert Greenfield · Robert Grünbaum
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| The DC Comics Encyclopedia Special Edition | 978-0-7566-4118-4 (0-7566-4118-7) | 2008 | Michael Teitelbaum · Scott Beatty |
| The "DC Comics" Encyclopedia: The Definitive Guide to the Characters of the DC Universe | 978-1-4053-2891-3 (1-4053-2891-6) | 2008 | Daniel Wallace · Scott Beatty · Phil Jimenez |
| The DC Comics Encyclopedia, Updated and Expanded Edition | 978-0-7566-4119-1 (0-7566-4119-5) | 2008 | Michael Teitelbaum · Scott Beatty · Daniel Wallace |