Gaya APA

Gamble, J, E. et al (2007). Crafting and executing strategy : The quest competitive advantage concepts and cases (15th). Boston, Massachusetts: McGraw-Hill.

Gaya MLA

Gamble, John, E.. et al. "Crafting and executing strategy : The quest competitive advantage concepts and cases". 15th Boston, Massachusetts: McGraw-Hill, 2007. Text.