ISI. (1984). IS: SPECIFICATION FOR FLAT GLASS OIL LEVEL GAUGES FOR OIL STORAGE TANKS IS : 6202-1971. ISI.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रISI. IS: SPECIFICATION FOR FLAT GLASS OIL LEVEL GAUGES FOR OIL STORAGE TANKS IS : 6202-1971. NEW DELHI: ISI, 1984.
एमएलए (9वां संस्करण) प्रशस्ति पत्रISI. IS: SPECIFICATION FOR FLAT GLASS OIL LEVEL GAUGES FOR OIL STORAGE TANKS IS : 6202-1971. ISI, 1984.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.