Citazione Stile APA (7a Edizione)

Vernon, R., & Wells, L. T. (1976). Economic environment of international business (2d ed.). Prentice-Hall.

Citazione stile Chigago Style (17a edizione)

Vernon, Raymond, e Louis T. Wells. Economic Environment of International Business. 2d ed. Englewood Cliffs, N.J: Prentice-Hall, 1976.

Citatione MLA (9a ed.)

Vernon, Raymond, e Louis T. Wells. Economic Environment of International Business. 2d ed. Prentice-Hall, 1976.