Não informado. (1996). Emerging Technology Series. United Nations, Industrial Development Organization.
Chicago (17e ed.) BronvermeldingNão informado. Emerging Technology Series. Vienna: United Nations, Industrial Development Organization, 1996.
MLA (8e ed.) BronvermeldingNão informado. Emerging Technology Series. United Nations, Industrial Development Organization, 1996.
Let op: Deze citaties zijn niet altijd 100% accuraat.