Geller, L. K., & Lois K. Geller. (2002). Response: The complete guide to profitable direct marketing. Oxford,New York: Oxford University Press.
Čikaški stil citiranjaGeller, Lois K., i Lois K. Geller. Response: The Complete Guide to Profitable Direct Marketing. Oxford,New York: Oxford University Press, 2002.
MLA način citiranjaGeller, Lois K., i Lois K. Geller. Response: The Complete Guide to Profitable Direct Marketing. Oxford,New York: Oxford University Press, 2002.
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