Butcher, M. (2008). Learning Drupal 6 module development: A practical tutorial for creating your first Drupal 6 modules with PHP. Packt.
芝加哥风格引文Butcher, Matt. Learning Drupal 6 Module Development: A Practical Tutorial for Creating Your First Drupal 6 Modules with PHP. Birmingham: Packt, 2008.
MLA引文Butcher, Matt. Learning Drupal 6 Module Development: A Practical Tutorial for Creating Your First Drupal 6 Modules with PHP. Packt, 2008.
警告：这些引文格式不一定是100％准确.