Cite
APA Citation
Bikner-Ahsbahs, A., Vohns, A., Bruder, R., Schmitt, O., & Dörfler, W. (2016). Theories in and of Mathematics Education : Theory Strands in German Speaking Countries. Switzerland : SpringerOpen. http://access.bl.uk/ark:/81055/vdc_100076099703.0x000001