Landis, J. R. (1992). Sociology: Concepts and characteristics. Wadsworth Pub. Co..
Chicago-čujuhus (17. p.)Landis, Judson R. Sociology: Concepts and Characteristics. Belmont, Calif.: Wadsworth Pub. Co., 1992.
MLA-čujuhus (9. p.)Landis, Judson R. Sociology: Concepts and Characteristics. Wadsworth Pub. Co., 1992.
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