Não informado. (1971). R & D Projects in Documentation and Librarianship. International Federation for Documentation.
Chicago-referens (17:e uppl.)Não informado. R & D Projects in Documentation and Librarianship. The Hague, Holanda: International Federation for Documentation, 1971.
MLA-referens (8:e uppl.)Não informado. R & D Projects in Documentation and Librarianship. International Federation for Documentation, 1971.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.