Noble, M., Doucette, A., Myburgh, D., & Singh, G. (2008). Drupal 6 site builder solutions: Build powerful web site features for your business and connect to your customers through blogs, product catalogs, newsletters, and maps. Packt Publishing Ltd..

Noble, Mark, Alan Doucette, Dave Myburgh, and G. Singh. Drupal 6 Site Builder Solutions: Build Powerful Web Site Features for Your Business and Connect to Your Customers Through Blogs, Product Catalogs, Newsletters, and Maps. Birmingham, U.K.: Packt Publishing Ltd., 2008.

Noble, Mark, et al. Drupal 6 Site Builder Solutions: Build Powerful Web Site Features for Your Business and Connect to Your Customers Through Blogs, Product Catalogs, Newsletters, and Maps. Packt Publishing Ltd., 2008.