Dyfyniad APA
Byrns, R. (1995). Student guide for learning economics: To accompany Byrns/Stone Economics 6th ed. HarperCollins College publ..
Dyfyniad Arddull Chicago
Byrns, Ralph. Student Guide for Learning Economics: To Accompany Byrns/Stone Economics 6th Ed. New York: HarperCollins College publ., 1995.
Dyfyniad MLA
Byrns, Ralph. Student Guide for Learning Economics: To Accompany Byrns/Stone Economics 6th Ed. HarperCollins College publ., 1995.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.