Gaya APA

Gamble, J, E., Jr., A, A, T. (2011). Essential of Strategic Management The Quest for Competitive Advantage (2nd ed.). New York: McGrawHill.

Gaya MLA

Gamble, John, E.., Jr., Arthur, A., Thompson. "Essential of Strategic Management The Quest for Competitive Advantage". 2nd ed. New York: McGrawHill, 2011. Text.