Jabarkan Bacaan lebih lanjut dari Senyum

Ottenheimer, H.J. (2006). The anthropology of language: An introduction to linguistic anthropology. Belmont, CA: Thomson Wadsworh.

Cited in: Russell and Fernandez-Dols, eds. (1997).

Russell and Fernandez-Dols, eds. (1997). The Psychology of Facial Expression. Cambridge. .