Heskett, J. L. (1997). The service profit chain: How leading companies link profit and growth to loyalty, statisfaction, and value. New York: The Free Press.
استشهاد بنمط شيكاغوHeskett, James L. The Service Profit Chain: How Leading Companies Link Profit and Growth to Loyalty, Statisfaction, and Value. New York: The Free Press, 1997.
MLA استشهادHeskett, James L. The Service Profit Chain: How Leading Companies Link Profit and Growth to Loyalty, Statisfaction, and Value. New York: The Free Press, 1997.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.