Dyfyniad APA

SILK, L. S. (1975). Contemporary economics: Principles and Issues (2nd ed.). McGraw-Hill.

Dyfyniad Arddull Chicago

SILK, Leonard S. Contemporary Economics: Principles and Issues. 2nd ed. New York: McGraw-Hill, 1975.

Dyfyniad MLA

SILK, Leonard S. Contemporary Economics: Principles and Issues. 2nd ed. McGraw-Hill, 1975.

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