Singh, U. (1998). Administrative system in India: (Vedic age to 1947). APH.
芝加哥风格引文Singh, U.B. Administrative System in India: (Vedic Age to 1947). New Delhi: APH, 1998.
MLA引文Singh, U.B. Administrative System in India: (Vedic Age to 1947). APH, 1998.
警告：这些引文格式不一定是100％准确.