Não informado. (1953). Journal of Mines, Metals and Fuels. Books & Journals Private.
Chicago (17e ed.) BronvermeldingNão informado. Journal of Mines, Metals and Fuels. Calcutta, India: Books & Journals Private, 1953.
MLA (8e ed.) BronvermeldingNão informado. Journal of Mines, Metals and Fuels. Books & Journals Private, 1953.
Let op: Deze citaties zijn niet altijd 100% accuraat.