Bolenius, E. M. (1923). Second and third grade manual: A help-book for teachers. Houghton Mifflin Company.
Chicago-referens (17:e uppl.)Bolenius, Emma Miller. Second and Third Grade Manual: A Help-book for Teachers. Boston ; New York ; Chicago ; Dallas ; San Francisco: Houghton Mifflin Company, 1923.
MLA-referens (8:e uppl.)Bolenius, Emma Miller. Second and Third Grade Manual: A Help-book for Teachers. Houghton Mifflin Company, 1923.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.