Dyfyniad APA

Hugh, W., & Rorry, S. (2007). Effective Environmental Management: Principles and case Studies. Allen & Unwin.

Dyfyniad Arddull Chicago

Hugh, Wyndham, and Sullivan Rorry. Effective Environmental Management: Principles and Case Studies. Australia: Allen & Unwin, 2007.

Dyfyniad MLA

Hugh, Wyndham, and Sullivan Rorry. Effective Environmental Management: Principles and Case Studies. Allen & Unwin, 2007.

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