Kapur, A. C. (2011). Principles of political science (21th rev. ed.). S. Chand.
Lua i Stíl Chicago (17ú heag.)Kapur, Anup Chand. Principles of Political Science. 21th rev. ed. Delhi: S. Chand, 2011.
Lua MLA (8ú heag.)Kapur, Anup Chand. Principles of Political Science. 21th rev. ed. S. Chand, 2011.
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