Deismireacht APA

Spencer, E. W. (2003). Earth science: Understanding environmental systems. Boston: McGraw-Hill.

Trích dẫn kiểu Chicago

Spencer, Edgar W. Earth Science: Understanding Environmental Systems. Boston: McGraw-Hill, 2003.

Deismireacht MLA

Spencer, Edgar W. Earth Science: Understanding Environmental Systems. Boston: McGraw-Hill, 2003.

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