Liljedahl, P., Santos-Trigo, M., Malaspina, U., & Bruder, R. (2016). Problem Solving in Mathematics Education. Springer International Publishing : Imprint: Springer. https://doi.org/10.1007/978-3-319-40730-2
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিLiljedahl, Peter, Manuel Santos-Trigo, Uldarico Malaspina, এবং Regina Bruder. Problem Solving in Mathematics Education. Cham: Springer International Publishing : Imprint: Springer, 2016. https://doi.org/10.1007/978-3-319-40730-2.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিLiljedahl, Peter, et al. Problem Solving in Mathematics Education. Springer International Publishing : Imprint: Springer, 2016. https://doi.org/10.1007/978-3-319-40730-2.
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