Gopa Kumar, G. (2011). Foreign policy, federalism and international treaties. New Century.
शिकागो स्टाइल उद्धरणGopa Kumar, G. Foreign Policy, Federalism and International Treaties. New Delhi: New Century, 2011.
एमएलए उद्धरणGopa Kumar, G. Foreign Policy, Federalism and International Treaties. New Century, 2011.
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