Não informado. (1966). Research in Education. Educational Research Information Center.
Chicago-Zitierstil (17. Ausg.)Não informado. Research in Education. Washington: Educational Research Information Center, 1966.
MLA-Zitierstil (8. Ausg.)Não informado. Research in Education. Educational Research Information Center, 1966.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.