1. Andersson, A., & Österling, L. (2013, July–August). Measuring immeasurable values. In A. M. Lindmeier & A. Heinze (Eds.), Paper presented at the Proceedings of the 37th Conference of the PME (Vol. 2, pp. 17–24). Kiel, Germany.
2. Arber, S. (1993). Designing samples. In N. Gilbert (Ed.), Researching social life (pp. 68–92). London: Sage.
3. Atweh, B., & Seah, W. T. (2008). Theorising values and their study in mathematics education. Presented at the AARE Conference. Fremantle, Australia.
http://www.aare.edu.au/07pap/atw07578.pdf
.
4. Bishop, A. J. (1988). Mathematical enculturation: A cultural perspective on mathematics education. Dordrecht, The Netherlands: Kluwer Academic Publishers.
5. Bishop, A. J. (2001). Educating student teachers about values in mathematics education. In F. L. Lin & T. Cooney (Eds.), Making sense of mathematics teacher education (pp. 233–246). Holland: Kluwer Academic Publishers.