Não informado. (1966). Research in Education. Educational Research Information Center.
Chicago-referens (17:e uppl.)Não informado. Research in Education. Washington: Educational Research Information Center, 1966.
MLA-referens (8:e uppl.)Não informado. Research in Education. Educational Research Information Center, 1966.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.