Dyfyniad APA

Collard,David. Economics,growth and sustainable enviroments. St.Martin's Press.

Dyfyniad Arddull Chicago

Collard,David. Economics,growth and Sustainable Enviroments. New York: St.Martin's Press.

Dyfyniad MLA

Collard,David. Economics,growth and Sustainable Enviroments. St.Martin's Press.

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