Brondmo Hans Peter. (2000). Eng@ged: The New Rules of Internet Direct Marketing: E-mail Strategies for Creating Profitable Customer Relationships. Harper Business, Harper Collins Publisher.

Brondmo Hans Peter. Eng@ged: The New Rules of Internet Direct Marketing: E-mail Strategies for Creating Profitable Customer Relationships. NewYork: Harper Business, Harper Collins Publisher, 2000.

Brondmo Hans Peter. Eng@ged: The New Rules of Internet Direct Marketing: E-mail Strategies for Creating Profitable Customer Relationships. Harper Business, Harper Collins Publisher, 2000.