Cooley, C. H., & Angell, R. C. (1969). Sociological theory and social research: Being selected papers of Charles Horton Cooley (Rev. and extended.). A. M. Kelley.
Lua i Stíl Chicago (17ú heag.)Cooley, Charles Horton, agus Robert Cooley Angell. Sociological Theory and Social Research: Being Selected Papers of Charles Horton Cooley. Rev. and extended. New York: A. M. Kelley, 1969.
Lua MLA (8ú heag.)Cooley, Charles Horton, agus Robert Cooley Angell. Sociological Theory and Social Research: Being Selected Papers of Charles Horton Cooley. Rev. and extended. A. M. Kelley, 1969.
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