McCullough, H. B. (1989). Political ideologies and political philosophies. Wall & Thompson.
Lua i Stíl Chicago (17ú heag.)McCullough, H. B. Political Ideologies and Political Philosophies. Toronto: Wall & Thompson, 1989.
Lua MLA (9ú heag.)McCullough, H. B. Political Ideologies and Political Philosophies. Wall & Thompson, 1989.
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