Dyfyniad APA

Deasington, J. (1999). Environmental management: Principles and practice. Routledge.

Dyfyniad Arddull Chicago

Deasington, J. Environmental Management: Principles and Practice. London: Routledge, 1999.

Dyfyniad MLA

Deasington, J. Environmental Management: Principles and Practice. Routledge, 1999.

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