Principles & Elements of Design
http://www.digital-web.com/articles/principles_and_elements_of_design/
Value Techniques/Messages in Advertising
http://www.valleytech.k12.ma.us/medialit/techniques.htm
Slogans
http://www.cbc.ca/ageofpersuasion/episode/2010/05/13/season-4-slogans/
