Seltz, D. D. (1982). Handbook of effective sales prospecting techniques. Addison-Wesley.
Čikaški stil citiranja (17. izdanje)Seltz, David D. Handbook of Effective Sales Prospecting Techniques. Reading, Mass: Addison-Wesley, 1982.
MLA način citiranja (9. izdanje)Seltz, David D. Handbook of Effective Sales Prospecting Techniques. Addison-Wesley, 1982.
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