APA-viite (7. p.)
Shreves, R. (2008). Drupal 6 themes: Create a new theme for your Drupal 6 site with a clean layout and powerful CSS styling. Packt Publishing.
Chicago-viite (17. p.)
Shreves, Ric. Drupal 6 Themes: Create a New Theme for Your Drupal 6 Site with a Clean Layout and Powerful CSS Styling. Birmingham, U.K.: Packt Publishing, 2008.
MLA-viite (9. p.)
Shreves, Ric. Drupal 6 Themes: Create a New Theme for Your Drupal 6 Site with a Clean Layout and Powerful CSS Styling. Packt Publishing, 2008.
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