Gaya APA

Ball, D, A., Mcculloch, W, H. (1985). International business : introduction and essentials (2nd.ed.). Plano,Texas: Business Publications.

Gaya MLA

Ball, Donald, A.., Mcculloch, Wendell, H.. "International business : introduction and essentials". 2nd.ed. Plano,Texas: Business Publications, 1985. Text.