BowserB. P. (1981). The contribution of blacks to sociological knowledge: A problem of theory and role to 1950. Phylon, 42(2), 180–193. https://doi.org/10.2307/274722
2.
MayoE. (2004). The human problems of an industrial civilization. Routledge.
3.
MillardT. L. (1962). Human relations in a changing society, trends and principles. Journal of Educational Sociology, 35(5), 228–235. https://doi.org/10.2307/2264569