Dyfyniad APA

Heather,Ken. (2002). The economics of industries and firms. Pearson Education Ltd.

Dyfyniad Arddull Chicago

Heather,Ken. The Economics of Industries and Firms. Harlow: Pearson Education Ltd, 2002.

Dyfyniad MLA

Heather,Ken. The Economics of Industries and Firms. Pearson Education Ltd, 2002.

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