Verba, S., & Nie, N. H. Participation in America: Political democracy an social equality. University of Chicago Press.
Citace podle Chicago (17th ed.)Verba, Sidney, a Norman H. Nie. Participation in America: Political Democracy an Social Equality. Chicago: University of Chicago Press.
Citace podle MLA (9th ed.)Verba, Sidney, a Norman H. Nie. Participation in America: Political Democracy an Social Equality. University of Chicago Press.
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