Dyfyniad APA

(1991). Strategy: Seeking and Securing Competitive Advantage. Boston: Harvard Business School Press.

Dyfyniad Arddull Chicago

Strategy: Seeking and Securing Competitive Advantage. Boston: Harvard Business School Press, 1991.

Dyfyniad MLA

Strategy: Seeking and Securing Competitive Advantage. Boston: Harvard Business School Press, 1991.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.