APA Edition Citation

Chopra, P. N. (2006). Principles of economics (9th ed.). Kalyani.

Chicago Edition Citation

Chopra, P. N. Principles of Economics. 9th ed. Ludhiana: Kalyani, 2006.

MLA Edition Citation

Chopra, P. N. Principles of Economics. 9th ed. Kalyani, 2006.

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