Gaya APA

A, P, I, J., Robinson, R, B. (1982). Formulation and Implementation of Competitive Strategy (Second - Ed.). USA: Richard D Irwin, Inc..

Gaya MLA

A, Pearce, II,, John., Robinson, Richard, B. "Formulation and Implementation of Competitive Strategy". Second - Ed. USA: Richard D Irwin, Inc., 1982. Text.