Singh, R. D. (1985). Population Structure of Indian Cities: A case study of the cities of Behar. Inter-India.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSingh, Ram Dayal. Population Structure of Indian Cities: A Case Study of the Cities of Behar. Inter-India, 1985.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSingh, Ram Dayal. Population Structure of Indian Cities: A Case Study of the Cities of Behar. Inter-India, 1985.
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