Gauba, O. P. (2015). An Introduction to Political Theory (7th.). MAYUR PAPERBACKS.
Lua i Stíl Chicago (17ú heag.)Gauba, O P. An Introduction to Political Theory. 7th. Indirapuram: MAYUR PAPERBACKS, 2015.
Lua MLA (9ú heag.)Gauba, O P. An Introduction to Political Theory. 7th. MAYUR PAPERBACKS, 2015.
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