ISI. (1984). IS: SPECIFICATION FOR FLAT GLASS OIL LEVEL GAUGES FOR OIL STORAGE TANKS IS : 6202-1971. ISI.
Chicago (17e ed.) BronvermeldingISI. IS: SPECIFICATION FOR FLAT GLASS OIL LEVEL GAUGES FOR OIL STORAGE TANKS IS : 6202-1971. NEW DELHI: ISI, 1984.
MLA (9e ed.) BronvermeldingISI. IS: SPECIFICATION FOR FLAT GLASS OIL LEVEL GAUGES FOR OIL STORAGE TANKS IS : 6202-1971. ISI, 1984.
Let op: Deze citaties zijn niet altijd 100% accuraat.