Aggarwal, R. (2014). Advanced objective general knowledge. S. Chand & Co.
Lua i Stíl Chicago (17ú heag.)Aggarwal, R. Advanced Objective General Knowledge. New Delhi: S. Chand & Co, 2014.
Lua MLA (9ú heag.)Aggarwal, R. Advanced Objective General Knowledge. S. Chand & Co, 2014.
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