Não informado. (1978). IFDA Dossier. International Foundation for Development Alternatives.
Chicago (17e ed.) BronvermeldingNão informado. IFDA Dossier. Geneva, Suíça: International Foundation for Development Alternatives, 1978.
MLA (8e ed.) BronvermeldingNão informado. IFDA Dossier. International Foundation for Development Alternatives, 1978.
Let op: Deze citaties zijn niet altijd 100% accuraat.