Gaya APA

Vernon, R., Wells, L, T. (1986). The Economic Environment of International Business (Pertama, Cet 1). Englewood Cliffs: Prentice Hall.

Gaya MLA

Vernon, Raymond., Wells, Louis, T. "The Economic Environment of International Business". Pertama, Cet 1 Englewood Cliffs: Prentice Hall, 1986. Text.