Futrell, C. (2002). Fundamentals of selling: Customers for life (7th ed.). Boston: Irwin/McGraw-Hill.
Chicago Style aipamenaFutrell, Charles. Fundamentals of Selling: Customers for Life. 7th ed. Boston: Irwin/McGraw-Hill, 2002.
MLA aipamenaFutrell, Charles. Fundamentals of Selling: Customers for Life. 7th ed. Boston: Irwin/McGraw-Hill, 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.