Futrell, C. M. (2011). Fundamentals of Selling (12th.). TMH.
Lua i Stíl Chicago (17ú heag.)Futrell, Charles M. Fundamentals of Selling. 12th. New Delhi: TMH, 2011.
Lua MLA (9ú heag.)Futrell, Charles M. Fundamentals of Selling. 12th. TMH, 2011.
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