Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.