Não informado. (1946). McGraw Hill digest: Engineering, industry, science, business. McGraw-Hill Publications.
Chicago (17e ed.) BronvermeldingNão informado. McGraw Hill Digest: Engineering, Industry, Science, Business. New York: McGraw-Hill Publications, 1946.
MLA (8e ed.) BronvermeldingNão informado. McGraw Hill Digest: Engineering, Industry, Science, Business. McGraw-Hill Publications, 1946.
Let op: Deze citaties zijn niet altijd 100% accuraat.