R Gordon · Rene Guertner · Ron Gordon · Ronni L Gordon
| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| The Big Blue Book of French Verbs with CD-ROM, Second Edition | 978-0-07-159150-8 | 2008 | David Stillman |
| The Big Red Book of Spanish Verbs with CD-ROM, Second Edition | 978-0-07-159155-3 | 2008 | " |
| The Blue Pocket Book of French Verbs: 333 Fully Conjugated Verbs | 978-0-07-142163-8 | 2003 | " |
| The Red Pocket Book of Spanish Verbs: 333 Fully Conjugated Verbs | 978-0-07-142162-1 | 2003 | " |
| The Ultimate French Review and Practice | 978-0-07-149242-3 | 2007 | " |
| The Ultimate French Review and Practice: Mastering French Grammar for Confident Communication | 978-0-658-00074-4 | 1999 | " |
| The Ultimate French Verb Review and Practice | 978-0-07-141672-6 | 2006 | " |
| The Ultimate Spanish Review and Practice | 978-0-658-00075-1 | 1999 | " |
| The Ultimate Spanish Verb Review and Practice | 978-0-07-141673-3 | 2005 | " |