Dyfyniad APA

Chopra,P.N. (2002). Advanced economic theory. Kalyani publishers.

Dyfyniad Arddull Chicago

Chopra,P.N. Advanced Economic Theory. Ludhiana: Kalyani publishers, 2002.

Dyfyniad MLA

Chopra,P.N. Advanced Economic Theory. Kalyani publishers, 2002.

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