Verba, S., & Nie, N. H. Participation in America: Political democracy an social equality. University of Chicago Press.
Cita Chicago Style (17a ed.)Verba, Sidney, y Norman H. Nie. Participation in America: Political Democracy an Social Equality. Chicago: University of Chicago Press.
Cita MLA (9a ed.)Verba, Sidney, y Norman H. Nie. Participation in America: Political Democracy an Social Equality. University of Chicago Press.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.