Futrell, C. M. (2014). Fundamentals of Selling customers for life through service. McGraw Hill.
Chicago-viite (17. p.)Futrell, Charles M. Fundamentals of Selling Customers for Life Through Service. McGraw Hill, 2014.
MLA-viite (8. p.)Futrell, Charles M. Fundamentals of Selling Customers for Life Through Service. McGraw Hill, 2014.
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