APA استشهاد

Winters, L. A. (1991). International economics (4th ed.). Routledge.

استشهاد بنمط شيكاغو

Winters, L Alan. International Economics. 4th ed. London: Routledge, 1991.

MLA استشهاد

Winters, L Alan. International Economics. 4th ed. Routledge, 1991.