Não informado. (1938). Chemical processing. Putman Publishing.
Chicago (17e ed.) BronvermeldingNão informado. Chemical Processing. Chicago, Ill: Putman Publishing, 1938.
MLA (8e ed.) BronvermeldingNão informado. Chemical Processing. Putman Publishing, 1938.
Let op: Deze citaties zijn niet altijd 100% accuraat.