APA (7 वां संस्करण) प्रशस्ति पत्र

Singh, G. (1974). Water Supply and Sanitary Engineering. Standard Publishers Distributors.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Singh, Gurcharan. Water Supply and Sanitary Engineering. Standard Publishers Distributors, 1974.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Singh, Gurcharan. Water Supply and Sanitary Engineering. Standard Publishers Distributors, 1974.

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