Shreves, R. (2012). Drupal search engine optimization: Drive people to your site with this supercharged guide to Drupal SEO. Packt Pub..
Citação do estilo Chicago (17ª ed.)Shreves, Ric. Drupal Search Engine Optimization: Drive People to Your Site with This Supercharged Guide to Drupal SEO. Birmingham: Packt Pub., 2012.
Citação MLA (9ª ed.)Shreves, Ric. Drupal Search Engine Optimization: Drive People to Your Site with This Supercharged Guide to Drupal SEO. Packt Pub., 2012.
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