SpringerLink (Online service), Kortenkamp, U., Brandt, B., Benz, C., Krummheuer, G., Ladel, S., & Vogel, R. (2014). Early Mathematics Learning: Selected Papers of the POEM 2012 Conference. Springer New York : Imprint: Springer.
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Ulrich Kortenkamp, Birgit Brandt, Christiane Benz, Götz Krummheuer, Silke Ladel, και Rose Vogel. Early Mathematics Learning: Selected Papers of the POEM 2012 Conference. New York, NY: Springer New York : Imprint: Springer, 2014.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. Early Mathematics Learning: Selected Papers of the POEM 2012 Conference. Springer New York : Imprint: Springer, 2014.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.