Não informado. (1985). Educational Innovation and Information. International Bureau of Education.
Chicago-referens (17:e uppl.)Não informado. Educational Innovation and Information. Geneva, Suíça: International Bureau of Education, 1985.
MLA-referens (8:e uppl.)Não informado. Educational Innovation and Information. International Bureau of Education, 1985.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.
