Não informado. (1936). Mine and Quarry Engineering. Tothill Press.
Chicago (17e ed.) BronvermeldingNão informado. Mine and Quarry Engineering. London: Tothill Press, 1936.
MLA (8e ed.) BronvermeldingNão informado. Mine and Quarry Engineering. Tothill Press, 1936.
Let op: Deze citaties zijn niet altijd 100% accuraat.