Indian Investment Centre. (1981). Directory of foreign collaborations in India. Indian Investment Centre.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रIndian Investment Centre. Directory of Foreign Collaborations in India. Indian Investment Centre, 1981.
एमएलए (9वां संस्करण) प्रशस्ति पत्रIndian Investment Centre. Directory of Foreign Collaborations in India. Indian Investment Centre, 1981.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.