$a An introduction to American government / Kenneth Prewitt, Sidney Verba. - Cambridge, 1983. $b (Social Science Research Council, Harvard University)
670
$a LCA online
670
$a Crises and sequences in political development / Leonard Binder [et al.]. - Princeton, 1971. $b Biogram z błędną datą ur. (Sidney Verba, born in New York, 1926)