| title | ISBN-13 | year of publication |
|---|---|---|
| OpenEdge Development: ProDataSets | 978-0-923562-03-8 | 2006 |
| OpenEdge Development: ProDataSets | 978-0-923562-00-7 | 2004 |
| OpenEdge Development: Progress 4GL Handbook | 978-0-923562-04-5 | 2006 |
| OpenEdge Development: Progress 4GL Handbook | 978-0-923562-01-4 | 2003 |