Não informado. (1970). Directory. International Federation of Library Associations.
Chicago-referens (17:e uppl.)Não informado. Directory. The Hague, Holanda: International Federation of Library Associations, 1970.
MLA-referens (8:e uppl.)Não informado. Directory. International Federation of Library Associations, 1970.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.