MACRIDIS, R. C. (1989). Contemporary political ideologies.-- Ed.4. Scott Foresman and Co.
Lua i Stíl Chicago (17ú heag.)MACRIDIS, Roy C. Contemporary Political Ideologies.-- Ed.4. Glenview: Scott Foresman and Co, 1989.
Lua MLA (9ú heag.)MACRIDIS, Roy C. Contemporary Political Ideologies.-- Ed.4. Scott Foresman and Co, 1989.
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