Hooley, G. J., & Savnders, J. (1993). Competitive Positioning: The key to market success. Prentic hall.
استشهاد بنمط شيكاغوHooley, Graham J., و John Savnders. Competitive Positioning: The Key to Market Success. New York: Prentic hall, 1993.
MLA استشهادHooley, Graham J., و John Savnders. Competitive Positioning: The Key to Market Success. Prentic hall, 1993.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.