Cita APA (7a ed.)

Sorokin, P. (1928). Contemporary sociological theories. Harper and Brothers.

Cita Chicago Style (17a ed.)

Sorokin, Pitirim. Contemporary Sociological Theories. New York ; London: Harper and Brothers, 1928.

Cita MLA (9a ed.)

Sorokin, Pitirim. Contemporary Sociological Theories. Harper and Brothers, 1928.