Não informado. IFLA communications. International Federation of Library Associations.
Chicago-referens (17:e uppl.)Não informado. IFLA Communications. Copenhagen: International Federation of Library Associations.
MLA-referens (8:e uppl.)Não informado. IFLA Communications. International Federation of Library Associations.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.