APA引文

Cunningham, W. P., Cunningham, M. A., & Saigo, B. W. (2003). Environmental science: A global concern (7th ed.). Dubuque, Iowa: McGraw-Hill.

Trích dẫn kiểu Chicago

Cunningham, William P., Mary Ann Cunningham, và Barbara Woodworth Saigo. Environmental Science: A Global Concern. 7th ed. Dubuque, Iowa: McGraw-Hill, 2003.

MLA引文

Cunningham, William P., Mary Ann Cunningham, và Barbara Woodworth Saigo. Environmental Science: A Global Concern. 7th ed. Dubuque, Iowa: McGraw-Hill, 2003.