David, M. (2011). WordPress 3 search engine optimization: Optimize your Website for popularity with search engines. Packt Pub..
芝加哥风格引文David, Michael. WordPress 3 Search Engine Optimization: Optimize Your Website for Popularity with Search Engines. Olton, Birmingham: Packt Pub., 2011.
MLA引文David, Michael. WordPress 3 Search Engine Optimization: Optimize Your Website for Popularity with Search Engines. Packt Pub., 2011.
警告：这些引文格式不一定是100％准确.