Dyfyniad APA

Walstad, W. B., & Bingham, R. C. (1993). Study guide to accompany McConnell and Brue economics (12th ed.). McGraw - hill.

Dyfyniad Arddull Chicago

Walstad, William B., and Robert C. Bingham. Study Guide to Accompany McConnell and Brue Economics. 12th ed. New York: McGraw - hill, 1993.

Dyfyniad MLA

Walstad, William B., and Robert C. Bingham. Study Guide to Accompany McConnell and Brue Economics. 12th ed. McGraw - hill, 1993.

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