Organization, U. N. I. D. (1968). Fertilizer production, technology and use: Papers presented ......- 11 Sept. 1965. United Nations.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOrganization, United Nations. Industrial Development. Fertilizer Production, Technology and Use: Papers Presented ......- 11 Sept. 1965. United Nations, 1968.
एमएलए (9वां संस्करण) प्रशस्ति पत्रOrganization, United Nations. Industrial Development. Fertilizer Production, Technology and Use: Papers Presented ......- 11 Sept. 1965. United Nations, 1968.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.