Reitman, J. I. (1998). Beyond 2000 The Future Of Direct Marketing Masa Depan Direct Marketing Jerry I. Reitman. Gramedia.
Čikaški stil citiranja (17. izdanje)Reitman, Jerry I. Beyond 2000 The Future Of Direct Marketing Masa Depan Direct Marketing Jerry I. Reitman. Gramedia, 1998.
MLA način citiranja (8. izdanje)Reitman, Jerry I. Beyond 2000 The Future Of Direct Marketing Masa Depan Direct Marketing Jerry I. Reitman. Gramedia, 1998.
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