Não informado. (1960). Soviet Journal of Non-Ferrous Metals. Primary Sources.
Chicago (17e ed.) BronvermeldingNão informado. Soviet Journal of Non-Ferrous Metals. New York: Primary Sources, 1960.
MLA (8e ed.) BronvermeldingNão informado. Soviet Journal of Non-Ferrous Metals. Primary Sources, 1960.
Let op: Deze citaties zijn niet altijd 100% accuraat.