Gaya APA

Blackwell, R., Stephan, K. (2001). Customers Rule : Why The E-Commerce Honeymoon is Over and Where Winning Businesses Go From Here . New York: Crown Business.

Gaya MLA

Blackwell, Roger., Stephan, Kristina. "Customers Rule : Why The E-Commerce Honeymoon is Over and Where Winning Businesses Go From Here". New York: Crown Business, 2001. Text.