Browne, M. N. and Keeley, S. (2015). Asking the Right Questions. 11th ed. Upper Saddle River, NJ: Prentice-Hall.
Duhigg, Charles (2012, February 16). How Companies Learn Your Secrets. New York Times Magazine at http://www.nytimes.com/2012/02/19/magazine/shopping-habits.html?pagewanted=all&_r=0, captured August 16, 2017.
Robinson, J. G. (2014, May 28). Watching the audience move: A New York Times tool is helping direct traffic from story to story. Nieman Journalism Lab at http://www.niemanlab.org/2014/05/watching-the-audience-move-a-new-york-times-tool-is-helping-direct-traffic-from-story-to-story/, captured August 16, 2017.
Rosman, K. and Dwoskin, E. (2014, March 23). Marketers Want to Know What You Really Mean Online. Wall Street Journal at http://online.wsj.com/news/articles/...23402132106512, captured August 16, 2017.
Turow, J. (2012, February 7). A Guide to the Digital Advertising Industry That’s Watching Your Every Click. The Atlantic at http://www.theatlantic.com/technology/archive/2012/02/a-guide-to-the-digital-advertising-industry-thats-watching-your-every-click/252667/, captured July 14, 2014.