Ekman, P. (1973). Darwin and facial expression: A century of research in review. Academic Press.
Chicago Edition CitationEkman, Paul. Darwin and Facial Expression: A Century of Research in Review. New York: Academic Press, 1973.
MLA Edition CitationEkman, Paul. Darwin and Facial Expression: A Century of Research in Review. Academic Press, 1973.
Warning: These citations may not always be 100% accurate.