APA引文

 Marshak, S. (2012).  Earth: Portrait of a planet.  W. W. Norton.

Trích dẫn kiểu Chicago

 Marshak, Stephen.  Earth: Portrait of a Planet.  W. W. Norton, 2012.

MLA引文

 Marshak, Stephen.  Earth: Portrait of a Planet.  W. W. Norton, 2012.

警告：这些引文格式不一定是100％准确.