APA استشهاد

Schiller, B. R. (2000). economy today (8th ed.). McGraw-Hill.

استشهاد بنمط شيكاغو

Schiller, Bradley R. Economy Today. 8th ed. Boston: McGraw-Hill, 2000.

MLA استشهاد

Schiller, Bradley R. Economy Today. 8th ed. McGraw-Hill, 2000.