Heckscher, G. (1973). The study of comparative government and politics. Greenwood Press.
Chicago-viite (17. p.)Heckscher, Gunnar. The Study of Comparative Government and Politics. Westport, Conn: Greenwood Press, 1973.
MLA-viite (9. p.)Heckscher, Gunnar. The Study of Comparative Government and Politics. Greenwood Press, 1973.
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