APA aipamena

Ferguson, C., & Kreps, J. M. (1965). Principles of economics (2nd ed.).

Chicago Style aipamena

Ferguson, C.E, and Juanita M. Kreps. Principles of Economics. 2nd ed. Calcutta, 1965.

MLA aipamena

Ferguson, C.E, and Juanita M. Kreps. Principles of Economics. 2nd ed. 1965.