American sociologist Robert K. Merton,Berger, P. L. and T. Luckmann. 1966. The Social Construction of Reality: A Treatise in the Sociology of
Knowledge. Garden City, NY: Anchor Books.
Cooley, Charles H. 1902. Human Nature and the Social Order. New York: Scribner's.
Goffman, Erving. 1959. The Presentation of Self In Everyday Life. New York: Doubleday.
Merton, Robert K. 1957. “The Role-Set: Problems in Sociological Theory.” British Journal of
Sociology 8(2):110–113.
Thomas, W.I. and D.S. Thomas. 1928. The Child in America: Behavior Problems and Programs. New
York: Knopf.