Dyfyniad APA

Hanrahan, G. (2012). Key concepts in environmental chemistry. Elsevier.

Dyfyniad Arddull Chicago

Hanrahan, Grady. Key Concepts in Environmental Chemistry. Waltham: Elsevier, 2012.

Dyfyniad MLA

Hanrahan, Grady. Key Concepts in Environmental Chemistry. Elsevier, 2012.

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