Gaya APA

A., P, I, J., Robinson, R, B. (2009). Formulation, implementation, & control of competitive strategy (Eleventh Ed.). New York: McGraw-Hill.

Gaya MLA

A., Pearce, II,, John., Robinson, Richard, B.. "Formulation, implementation, & control of competitive strategy". Eleventh Ed. New York: McGraw-Hill, 2009. .