1. Public service advertisements: Emotions and empathy guide prosocial behavior;Bagozzi;Journal of Marketing,1994
2. Fear, guilt, and shame appeals in social marketing;Brennan;Journal of Business Research,2010
3. Unlocking the potential of upstream social marketing;Gordon;European Journal of Marketing,2013
4. Gruber, A. (2014, November 20). Petition for an extra day off at Christmas falls just short of demanding a response. Government Executive. Retrieved from http://www.govexec.com/pay-benefits/2014/11/petition-extra-day-christmas-falls-just-short-demanding-response/99578/
5. Whose behavior is it anyway? The broader potential of social marketing;Hastings;Social Marketing Quarterly,2000