| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Beginning Drupal 7 | 978-1-4302-7045-4 | 2011 | |
| Beginning Drupal 7 | 978-1-4302-2859-2 | 2010 | |
| Drupal 7 | 978-84-415-2994-6 | 2011 | |
| Drupal 7: Zaawansowane programowanie | 978-83-246-3367-8 | ||
| Migrating from Drupal to Backdrop | 978-1-4842-1759-7 | 2015 | |
| Pro Drupal 7 Development | 978-1-4302-2838-7 | 2010 | John VanDyk |