Upitis, R. B., Phillips, E., & Higginson, W. (1997). Creative mathematics: Exploring children's understanding. Routledge.
Chicago Style (17. basım) AtıfUpitis, Rena Brigit, Eileen Phillips, ve William Higginson. Creative Mathematics: Exploring Children's Understanding. London: Routledge, 1997.
MLA (9th ed.) AtıfUpitis, Rena Brigit, et al. Creative Mathematics: Exploring Children's Understanding. Routledge, 1997.
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