Gleditsch, Nils Petter; Ottar Hellevik & Tord Høivik (1972) Folkemeininga om EEC i 1971 [The Development of Public Opinion on the Common Market in 1971], Syn og Segn.
Journal article
Gleditsch, Nils Petter; Ottar Hellevik & Tord Høivik (1972) Folkemeininga om EEC i 1971 [The Development of Public Opinion on the Common Market in 1971], Syn og Segn.