LaFrance, M. (2013). Why smile ?: The science behind facial expressions. W.W. Nortan & Company.
Chicago Style citaatLaFrance, Marrianne. Why Smile ?: The Science Behind Facial Expressions. New York: W.W. Nortan & Company, 2013.
MLA citatieLaFrance, Marrianne. Why Smile ?: The Science Behind Facial Expressions. W.W. Nortan & Company, 2013.
Let op: Deze citaties zijn niet altijd 100% accuraat.