SpringerLink (Online service), Taylor, P. J., & Barbeau, E. J. (2009). Challenging Mathematics In and Beyond the Classroom: The 16th ICMI Study. Springer US.
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Peter J. Taylor, και Edward J. Barbeau. Challenging Mathematics In and Beyond the Classroom: The 16th ICMI Study. Boston, MA: Springer US, 2009.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. Challenging Mathematics In and Beyond the Classroom: The 16th ICMI Study. Springer US, 2009.
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