APA (7th ed.) Zitazioa

(1979). Communism and political systems in Western Europe. Westview.

Chicago Style (17th ed.) Zitazioa

Communism and Political Systems in Western Europe. Boulder, Colo: Westview, 1979.

MLA (9th ed.) Zitazioa

Communism and Political Systems in Western Europe. Westview, 1979.