Futrell, C. (2006). Fundamentals of selling: Customers for life through service. Boston, Mass: McGraw-Hill/Irwin.
استشهاد بنمط شيكاغوFutrell, Charles. Fundamentals of Selling: Customers for Life Through Service. Boston, Mass: McGraw-Hill/Irwin, 2006.
MLA استشهادFutrell, Charles. Fundamentals of Selling: Customers for Life Through Service. Boston, Mass: McGraw-Hill/Irwin, 2006.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.