Gauba, O. P. (2011). Western Political Thought. Macmillan.
Lua i Stíl Chicago (17ú heag.)Gauba, O P. Western Political Thought. Gurugram: Macmillan, 2011.
Lua MLA (9ú heag.)Gauba, O P. Western Political Thought. Macmillan, 2011.
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