(1991). Strategy Seeking And Securing Competitive Advantage Edited With An Introduction By Cynthia A. Montgomery And Michael E. Porter. Harvard Business School.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Strategy Seeking And Securing Competitive Advantage Edited With An Introduction By Cynthia A. Montgomery And Michael E. Porter. Harvard Business School, 1991.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Strategy Seeking And Securing Competitive Advantage Edited With An Introduction By Cynthia A. Montgomery And Michael E. Porter. Harvard Business School, 1991.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.