8Chang- Hoan Cho, John D. Leckenby ( 1998),"Interactivity as a Measure of Advertising Effectiveness", http: ∥www. utexas, edu/coc/admedium/.
9Chang- Hoan Cho, John D.Leckenby(1998),"How Advertising works on the WWW: Modified Elaboration Likelihood Model", Journal of lnteractivity Advertising.
10David Kirsh,"Interactivity and Multimedia Interfaces".Dept. of Cognitive Science Univ. California, San Diego,http:∥cogisci, ucsd. edu/kirsh.