Gaya APA

Robinson, R, B., A., P, I, J. (2009). Formulation, implementation, and control of competitive strategy (11 th ed.). New York: McGraw-Hill Irwin.

Gaya MLA

Robinson, Richard, B.., A., Pearce, Ii,, John. "Formulation, implementation, and control of competitive strategy". 11 th ed. New York: McGraw-Hill Irwin, 2009. Text.