APA (7 वां संस्करण) प्रशस्ति पत्र

India. Central Statistical Organisation, C. (1972). Annual Survey of Industries: 1966 - Census sector. The author.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

India. Central Statistical Organisation, Calcutta. Annual Survey of Industries: 1966 - Census Sector. The author, 1972.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

India. Central Statistical Organisation, Calcutta. Annual Survey of Industries: 1966 - Census Sector. The author, 1972.

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