APA引文

Perman, R. (2011). Natural resource and environmental economics. Harlow, Essex: Pearson Addison Wesley.

Trích dẫn kiểu Chicago

Perman, Roger. Natural Resource and Environmental Economics. Harlow, Essex: Pearson Addison Wesley, 2011.

MLA引文

Perman, Roger. Natural Resource and Environmental Economics. Harlow, Essex: Pearson Addison Wesley, 2011.

警告：這些引文格式不一定是100％准確.