Gaya APA

A., P, I, J., R.B., R. (1988). Formulation and implementation of competitive strategy (3rd ed.). Homewood: Irwin.

Gaya MLA

A., Pearce, Ii,, John., R.B., Robinson. "Formulation and implementation of competitive strategy". 3rd ed. Homewood: Irwin, 1988. Buku/Printed Material.