Não informado. (2014). Investigations in Mathematics Learning. Research Council on Mathematics Learning.
Chicago-referens (17:e uppl.)Não informado. Investigations in Mathematics Learning. Memphis, Tenn: Research Council on Mathematics Learning, 2014.
MLA-referens (8:e uppl.)Não informado. Investigations in Mathematics Learning. Research Council on Mathematics Learning, 2014.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.