Dyfyniad APA

Bowden, E. V. (1981). Economic Evolution. Cincinnati: South-Western Publishing.

Dyfyniad Arddull Chicago

Bowden, Elbert V. Economic Evolution. Cincinnati: South-Western Publishing, 1981.

Dyfyniad MLA

Bowden, Elbert V. Economic Evolution. Cincinnati: South-Western Publishing, 1981.

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