Vienna, U. N. I. D. O. (1971). Industrial location and regional development: Proceedings of .....August 1968. The author.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVienna, United Nations. Industrial Development Organization. Industrial Location and Regional Development: Proceedings of .....August 1968. The author, 1971.
एमएलए (9वां संस्करण) प्रशस्ति पत्रVienna, United Nations. Industrial Development Organization. Industrial Location and Regional Development: Proceedings of .....August 1968. The author, 1971.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.