Dyfyniad APA

Becker, G. S., MICHAEL, R. J., & GROSSMAN, M. (1971). Economic theory ([1st ed.].). Knopf; [distributed by Random House.

Dyfyniad Arddull Chicago

Becker, Gary Stanley, Robert J. MICHAEL, and Michael GROSSMAN. Economic Theory. [1st ed.]. New York,: Knopf; [distributed by Random House, 1971.

Dyfyniad MLA

Becker, Gary Stanley, et al. Economic Theory. [1st ed.]. Knopf; [distributed by Random House, 1971.

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