Jelaskan included in book: dari Tawa dalam bahasa melayu

Raskin, Victor, Semantic Mechanisms of Humor (1985).

MacDonald, C., "A Chuckle a Day Keeps the Doctor Away: Therapeutic Humor & Laughter"  Journal of Psychosocial Nursing and Mental Health Services(2004) V42, 3:18-25. psychnurse.org

Kawakami, K., et al., Origins of smile and laughter:  A preliminary study  Early Human Development (2006) 82, 61-66. kyoto-u.ac.jp

Johnson, S., Emotions and the Brain Discover (2003) V24, N4. discover.com

Panksepp, J., Burgdorf, J.,"Laughing" rats and the evolutionary antecedents of human joy? Physiology & Behavior (2003) 79:533-547. psych.umn.edu

Milius, S., Don't look now, but is that dog laughing? Science News (2001) V160 4:55. sciencenews.org

Simonet, P., et al., Dog Laughter: Recorded playback reduces stress related behavior in shelter dogs 7th International Conference on Environmental Enrichment (2005). petalk.org

Discover Health (2004) Humor & Laughter:  Health Benefits and Online Sources , helpguide.org

Klein, A. The Courage to Laugh: Humor, Hope and Healing in the Face of Death and Dying. Los Angeles, CA: Tarcher/Putman, 1998.

Ron Jenkins Subversive laughter (New York, Free Press, 1994), 13ff

Bogard, M. Laughter and its Effects on Groups. New York, New York: Bullish Press, 2008.

Humor Theory. The formulae of laughter by Igor Krichtafovitch, Outskitspress, 2006,

Hans-Georg Moeller und Günter Wohlfart (Hrsg.): Laughter in Eastern and Western Philosophies. Verlag Karl Alber, Freiburg / München 2010.