Não informado. (1991). Business & the contemporary world. Walter de Gruyter.
Chicago (17e ed.) BronvermeldingNão informado. Business & the Contemporary World. Hawthorne, NY: Walter de Gruyter, 1991.
MLA (8e ed.) BronvermeldingNão informado. Business & the Contemporary World. Walter de Gruyter, 1991.
Let op: Deze citaties zijn niet altijd 100% accuraat.