APA引文

Cunningham, W. P., & Saigo, B. W. (1997). Environmental Science: A Global Concern. Boston: McGraw-Hill.

Trích dẫn kiểu Chicago

Cunningham, William P., và Barbara Woodworth Saigo. Environmental Science: A Global Concern. Boston: McGraw-Hill, 1997.

MLA引文

Cunningham, William P., và Barbara Woodworth Saigo. Environmental Science: A Global Concern. Boston: McGraw-Hill, 1997.

警告：這些引文格式不一定是100％准確.