APA aipamena

Ferguson, C., & Freps, J. M. (1965). Principles of economics. New York: Holt, Rinehart and Winston.

Chicago Style aipamena

Ferguson, C.E., và Juanita M. Freps. Principles of Economics. New York: Holt, Rinehart and Winston, 1965.

MLA aipamena

Ferguson, C.E., và Juanita M. Freps. Principles of Economics. New York: Holt, Rinehart and Winston, 1965.

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