Dyfyniad APA

Reid,David. (1995). Sustainable development: An introductory guide. Earthscan Publications Ltd.

Dyfyniad Arddull Chicago

Reid,David. Sustainable Development: An Introductory Guide. London: Earthscan Publications Ltd, 1995.

Dyfyniad MLA

Reid,David. Sustainable Development: An Introductory Guide. Earthscan Publications Ltd, 1995.

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