Dyfyniad APA

Jathar, G., & Beri, S. (1966). Elementary principles of economics (10th ed.).

Dyfyniad Arddull Chicago

Jathar, G.B, and S.G Beri. Elementary Principles of Economics. 10th ed. 1966.

Dyfyniad MLA

Jathar, G.B, and S.G Beri. Elementary Principles of Economics. 10th ed. 1966.

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