1. Arcavi, A. (2003). The role of visual representations in the learning of mathematics. Educational Studies in Mathematics, 52 (3), 215-241.;
2. Banđur, V., Potkonjak, N. (2006). Istraživanje u školama. Užice: Učiteljski fakultet.;
3. Bishop, A. J. (1980). Spatial abilities and mathematics achievement - A review. Educational Studies in Mathematics, 11, 257-269.;
4. Bruce, C., Sinclair, N., Moss, J., Hawes, Z. & Caswell, B. (2015). Spatializing the curriculum. In: Davis, B. & the Spatial Reasoning Study Group (Eds.). Spatial reasoning in the early years: Principles, assertions, and speculations (85-106). Routledge.;
5. Bruner, J. (1960). The Process of Education. Cambridge, Massachusetts: Harvard University Press.;