| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Il computer multimediale. Strumento creativo per comunicare. Per le Scuole superiori | 978-88-08-09787-3 | Giuseppe Ruffo · Dan Oja | |
| Il mondo dell'informatica. Conoscere e usare il computer. Volume unico. Per la Scuola media | 978-88-08-01513-6 | G. Ruffo · D. Oja | |
| Microsoft® 7 Comprehensive | 978-0-538-47070-4 | 2010 | Dan Oja · Lisa Ruffolo |
| New Perspectives on Computer Concepts 2011, Comprehensive, w. CD-ROM | 978-0-538-47146-6 | 2010 | Dan Oja |
| New Perspectives on Microsoft® Office 2010, First Course, International Edition | 978-0-538-47098-8 | 2010 | Ann Shaffer · Patrick Carey |
| New Perspectives on Microsoft® Windows 7, Introductory International Edition | 978-0-538-47071-1 | 2010 | Dan Oja · Lisa Ruffolo |
J J · J. P. · J Parsons · June Jamnich Parsons · June Jamrich Parsons · June Jamrich Parsons and Dan Oja · June Jamrich Parsons (author), Dan Oja (author), Patrick Carey (author), Patrick Carey (author) Roy Ageloff (author) · June Jamrichoja Parsons · June (June Parsons) Parsons · June Parsons