Gamble, J., & Thompson, A. A. (2011). Essentials of strategic management: The quest for competitive advantage (2nd ed.). McGraw-Hill Irwin.

Gamble, John, and Arthur A. Thompson. Essentials of Strategic Management: The Quest for Competitive Advantage. 2nd ed. New York: McGraw-Hill Irwin, 2011.

Gamble, John, and Arthur A. Thompson. Essentials of Strategic Management: The Quest for Competitive Advantage. 2nd ed. McGraw-Hill Irwin, 2011.