Gaya APA

E, G, J., A, P, M. (2015). Essentials Of Strategi Management : The Quest For Competitive Advantage (ed. 4). America: McGraw-Hill.

Gaya MLA

E, Gamble, John., A, Peteraf, Margaret. "Essentials Of Strategi Management : The Quest For Competitive Advantage". ed. 4 America: McGraw-Hill, 2015. Text.