Gaya APA

Ferrell, O, F, G, A, L. (2009). Business: a changing world (7th.ed.). Boston: Mc. Gravo Hill.

Gaya MLA

Ferrell, O.C., Ferrel;, Geoffrey, A.Hirt;, Linda. "Business: a changing world". 7th.ed. Boston: Mc. Gravo Hill, 2009. Text.