APA استشهاد

Yarbrough, B. V., & Yarbrough, R. M. (2003). World economy: Trade and finance (6th ed.). South Western.

استشهاد بنمط شيكاغو

Yarbrough, Beth V., و Robert M. Yarbrough. World Economy: Trade and Finance. 6th ed. Australia: South Western, 2003.

MLA استشهاد

Yarbrough, Beth V., و Robert M. Yarbrough. World Economy: Trade and Finance. 6th ed. South Western, 2003.