India. Parliament. Committee on Public Undertakings. (1968). Heavy Engineering Corporation Ltd., Ministry of Industrial Development and Company Affairs (Department of Industrial Development). Lok Sabha Secretariat.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रIndia. Parliament. Committee on Public Undertakings. Heavy Engineering Corporation Ltd., Ministry of Industrial Development and Company Affairs (Department of Industrial Development). New Delhi: Lok Sabha Secretariat, 1968.
एमएलए (8वां संस्करण) प्रशस्ति पत्रIndia. Parliament. Committee on Public Undertakings. Heavy Engineering Corporation Ltd., Ministry of Industrial Development and Company Affairs (Department of Industrial Development). Lok Sabha Secretariat, 1968.
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