Dyfyniad APA

Salvatore, D., & Diulio, E. (1996). Schaum's outline of theory and problems of principles of economics (2nd ed.). McGraw-Hill.

Dyfyniad Arddull Chicago

Salvatore, Dominick, and Eugene Diulio. Schaum's Outline of Theory and Problems of Principles of Economics. 2nd ed. U.S.A.: McGraw-Hill, 1996.

Dyfyniad MLA

Salvatore, Dominick, and Eugene Diulio. Schaum's Outline of Theory and Problems of Principles of Economics. 2nd ed. McGraw-Hill, 1996.

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