Duncan, A. (1992). What primary teachers should know about math: Aileen Duncan. Hodder & Stoughton.
Chicago-referens (17:e uppl.)Duncan, Aileen. What Primary Teachers Should Know About Math: Aileen Duncan. London: Hodder & Stoughton, 1992.
MLA-referens (9:e uppl.)Duncan, Aileen. What Primary Teachers Should Know About Math: Aileen Duncan. Hodder & Stoughton, 1992.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.