Dyfyniad APA

Cunningham, W. P., & Cunningham, M. A. (2018). Environmental science: A global concern ([Foourteenth edition].). McGraw-Hill Education.

Dyfyniad Arddull Chicago

Cunningham, William P., and Mary Ann Cunningham. Environmental Science: A Global Concern. [Foourteenth edition]. New York, NY: McGraw-Hill Education, 2018.

Dyfyniad MLA

Cunningham, William P., and Mary Ann Cunningham. Environmental Science: A Global Concern. [Foourteenth edition]. McGraw-Hill Education, 2018.

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