Rossiter, J. and Danaher, P. 1998. Advanced Media Planning. Dordrecht, Netherlands: Kluwer Academic Publishers.
Toyota Motor Corporation. 1997. The Automobile Industry, Toyota and the World 1997. Aichi, Japan: Toyota Motor Corporation, International Public Affairs Division.
Komenar, Margo. 1997. Electronic Marketing. Canada: Wiley & Sons, Inc.
Rosen, Emanuel. 2000. The Anatomy of Buzz. London: Harper Collins Business.