Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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