Dyfyniad APA

Nikiforuk, A. (2010). Tar sands: Dirty oil and the future of a continent (Revised and updated.). GreyStone Books.

Dyfyniad Arddull Chicago

Nikiforuk, Andrew. Tar Sands: Dirty Oil and the Future of a Continent. Revised and updated. Vancouver: GreyStone Books, 2010.

Dyfyniad MLA

Nikiforuk, Andrew. Tar Sands: Dirty Oil and the Future of a Continent. Revised and updated. GreyStone Books, 2010.

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