APA aipamena

Cunningham, W. P., & William P. Cunningham; Mary Ann Cunningham. (2006). Principles of environmental science: Inquiry and applications. Dubuque, IA: McGraw-Hill.

Chicago Style aipamena

Cunningham, William P., và William P. Cunningham; Mary Ann Cunningham. Principles of Environmental Science: Inquiry and Applications. Dubuque, IA: McGraw-Hill, 2006.

MLA aipamena

Cunningham, William P., và William P. Cunningham; Mary Ann Cunningham. Principles of Environmental Science: Inquiry and Applications. Dubuque, IA: McGraw-Hill, 2006.