Gaya APA

Walker, O, C., Mullins, J, W. (2014). Marketing strategy : a decision-focused approach (8th. ed.). New York: McGraw-Hill.

Gaya MLA

Walker, Orville, C.., Mullins, John, W.. "Marketing strategy : a decision-focused approach". 8th. ed. New York: McGraw-Hill, 2014. Text.