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Dyfyniad Arddull ChicagoStone, Merlin, Alison Bond, and Elizabeth Blake. The Definitive Guide to Direct and Interactive Marketing: How to Select, Reach and Retain the Right Customers. Harlow: Financial Times Prentice Hall, 2003.
Dyfyniad MLAStone, Merlin, et al. The Definitive Guide to Direct and Interactive Marketing: How to Select, Reach and Retain the Right Customers. Financial Times Prentice Hall, 2003.
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