Dyfyniad APA

Miller, R. L. (1991). Economics, today and tomorrow (3rd ed.). Glencoe/McGraw-Hill.

Dyfyniad Arddull Chicago

Miller, Roger LeRoy. Economics, Today and Tomorrow. 3rd ed. Mission Hills, Calif: Glencoe/McGraw-Hill, 1991.

Dyfyniad MLA

Miller, Roger LeRoy. Economics, Today and Tomorrow. 3rd ed. Glencoe/McGraw-Hill, 1991.

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