Não informado. (1971). R & D Projects in Documentation and Librarianship. International Federation for Documentation.
Chicago (17e ed.) BronvermeldingNão informado. R & D Projects in Documentation and Librarianship. The Hague, Holanda: International Federation for Documentation, 1971.
MLA (8e ed.) BronvermeldingNão informado. R & D Projects in Documentation and Librarianship. International Federation for Documentation, 1971.
Let op: Deze citaties zijn niet altijd 100% accuraat.