APA (7th ed.) Citation

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 Style (17th ed.) Citation

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 (9th ed.) Citation

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.

Warning: These citations may not always be 100% accurate.