Dyfyniad APA

Nichols, D. A., & Reynolds, C. W. (1971). Principles of economics. Hot, Rinehart and Winston.

Dyfyniad Arddull Chicago

Nichols, Donald A., and Clark W. Reynolds. Principles of Economics. New York: Hot, Rinehart and Winston, 1971.

Dyfyniad MLA

Nichols, Donald A., and Clark W. Reynolds. Principles of Economics. Hot, Rinehart and Winston, 1971.

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