Não informado. (1949). Construction Methods and Equipment. McGraw-Hill.
Chicago (17e ed.) BronvermeldingNão informado. Construction Methods and Equipment. New York: McGraw-Hill, 1949.
MLA (8e ed.) BronvermeldingNão informado. Construction Methods and Equipment. McGraw-Hill, 1949.
Let op: Deze citaties zijn niet altijd 100% accuraat.