Tapp, A. (2012). Principles of Direct and Database Marketing (4th.). Pearson.
Chicago-čujuhus (17. p.)Tapp, Alan. Principles of Direct and Database Marketing. 4th. Pearson, 2012.
MLA-čujuhus (9. p.)Tapp, Alan. Principles of Direct and Database Marketing. 4th. Pearson, 2012.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.