APA citiranje

Cunningham, W. P. (2005). Environmental science: A global concern. McGraw-Hill higher education.

Trích dẫn kiểu Chicago

Cunningham, William P. Environmental Science: A Global Concern. McGraw-Hill higher education, 2005.

MLA citiranje

Cunningham, William P. Environmental Science: A Global Concern. McGraw-Hill higher education, 2005.

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