APA (7 वां संस्करण) प्रशस्ति पत्र

Bilas, R. (1988). Rural water resource utilization and planning: A geographical approach in Varanasi district. Concept Pubs.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Bilas, Ram. Rural Water Resource Utilization and Planning: A Geographical Approach in Varanasi District. Concept Pubs, 1988.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Bilas, Ram. Rural Water Resource Utilization and Planning: A Geographical Approach in Varanasi District. Concept Pubs, 1988.

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