Dyfyniad APA

Tapp, A. (2012). Principles of Direct and Database Marketing (4th.). Pearson.

Dyfyniad Arddull Chicago

Tapp, Alan. Principles of Direct and Database Marketing. 4th. Pearson, 2012.

Dyfyniad MLA

Tapp, Alan. Principles of Direct and Database Marketing. 4th. Pearson, 2012.

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