Persuading a Doubtful Teacher
Letter from Robert Cormier to Mrs. Beggs 14 February 1987
RELATED LINK:
Sharing fast and slow: The psychological connection between how we think and how we spread news on social media, by Sonja Song
http://www.niemanlab.org/2013/11/sharing-fast-and-slow-the-psychological-connection-between-how-we-think-and-how-we-spread-news-on-social-media/