SpringerLink (Online service), Felmer, P., Liljedahl, P., & Koichu, B. (2019). Problem Solving in Mathematics Instruction and Teacher Professional Development (1st ed. 2019.). Springer International Publishing : Imprint: Springer. https://doi.org/10.1007/978-3-030-29215-7
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Patricio Felmer, Peter Liljedahl, και Boris Koichu. Problem Solving in Mathematics Instruction and Teacher Professional Development. 1st ed. 2019. Cham: Springer International Publishing : Imprint: Springer, 2019. https://doi.org/10.1007/978-3-030-29215-7.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. Problem Solving in Mathematics Instruction and Teacher Professional Development. 1st ed. 2019. Springer International Publishing : Imprint: Springer, 2019. https://doi.org/10.1007/978-3-030-29215-7.
