Brondmo, H. P. (2000). The eng@ged customer: The new rules of Internet direct marketing. HarperBusiness.
Citazione stile Chigago Style (17a edizione)Brondmo, Hans Peter. The Eng@ged Customer: The New Rules of Internet Direct Marketing. New York: HarperBusiness, 2000.
Citatione MLA (9a ed.)Brondmo, Hans Peter. The Eng@ged Customer: The New Rules of Internet Direct Marketing. HarperBusiness, 2000.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.