APA引文

 Worrell, W. A. (2011).  Solid waste engineering, si.  South-Western, Cengage Learning.

Trích dẫn kiểu Chicago

 Worrell, William A.  Solid Waste Engineering, Si.  South-Western, Cengage Learning, 2011.

MLA引文

 Worrell, William A.  Solid Waste Engineering, Si.  South-Western, Cengage Learning, 2011.

警告：这些引文格式不一定是100％准确.