Não informado. (2014). Investigations in Mathematics Learning. Research Council on Mathematics Learning.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Investigations in Mathematics Learning. Memphis, Tenn: Research Council on Mathematics Learning, 2014.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Investigations in Mathematics Learning. Research Council on Mathematics Learning, 2014.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.