Não informado. (1947). Business Education Forum. National Business Education Association.
Chicago (17e ed.) BronvermeldingNão informado. Business Education Forum. Washington: National Business Education Association, 1947.
MLA (8e ed.) BronvermeldingNão informado. Business Education Forum. National Business Education Association, 1947.
Let op: Deze citaties zijn niet altijd 100% accuraat.