Hartenstein, Wolfgang und Klaus Liepelt (1962): Party Members and Party Voters in West-Germany. In: „Approaches to the Study of Political Participation“, Ed. S.Rokkan, Bergen.
Hartenstein, Wolfgang und Klaus Liepelt (1962): Party Members and Party Voters in West-Germany. In: „Approaches to the Study of Political Participation“, Ed. S.Rokkan, Bergen.