Cita APA (7a ed.)

Warner, W. L., & Srole, L. (1947). The social systems of american ethnic groups. Yale University Press.

Cita Chicago Style (17a ed.)

Warner, W. Lloyd, y Leo Srole. The Social Systems of American Ethnic Groups. New Haven: Yale University Press, 1947.

Cita MLA (8a ed.)

Warner, W. Lloyd, y Leo Srole. The Social Systems of American Ethnic Groups. Yale University Press, 1947.