Não informado. (1994). Journal of Educational and Behavioral Statistics. American Educational Research Association.
Chicago-referens (17:e uppl.)Não informado. Journal of Educational and Behavioral Statistics. Washington: American Educational Research Association, 1994.
MLA-referens (8:e uppl.)Não informado. Journal of Educational and Behavioral Statistics. American Educational Research Association, 1994.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.