Tolong jelaskan mengenai Rujukan dari Tawa dalam bahasa melayu

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Cousins, Norman, Anatomy of an Illness As Perceived by the Patient, 1979.

Davila-Ross, M., Allcock, B., Thomas, C., and Bard K.A. (2011) Aping expressions? Chimpanzees produce distinct laugh types when responding to laughter of others. Emotion

Fried, I., Wilson, C.L., MacDonald, K.A., and Behnke EJ. Electric current stimulates laughter. Nature, 391:650, 1998 (see patient AK)

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Provine, R. R., Laughter. American Scientist, V84, 38:45, 1996. ucla.edu