Singh, U. (1998). Administrative system in India: (Vedic age to 1947). APH.
Chicago-čujuhus (17. p.)Singh, U.B. Administrative System in India: (Vedic Age to 1947). New Delhi: APH, 1998.
MLA-čujuhus (9. p.)Singh, U.B. Administrative System in India: (Vedic Age to 1947). APH, 1998.
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