APA način citiranja (7. izdanje)
Costell, J. (2004). The science of sales success: A proven system for high-profit, repeatable results. AMACOM.
Čikaški stil citiranja (17. izdanje)
Costell, Josh. The Science of Sales Success: A Proven System for High-profit, Repeatable Results. New York: AMACOM, 2004.
MLA način citiranja (9. izdanje)
Costell, Josh. The Science of Sales Success: A Proven System for High-profit, Repeatable Results. AMACOM, 2004.
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