Singh, U. N. (1980). Some Aspects of Rural Life in Bihar: An economic study 1793-1833. Janaki Prakashan.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSingh, Upendra Narayan. Some Aspects of Rural Life in Bihar: An Economic Study 1793-1833. Janaki Prakashan, 1980.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSingh, Upendra Narayan. Some Aspects of Rural Life in Bihar: An Economic Study 1793-1833. Janaki Prakashan, 1980.
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