Soifer, A. (2020). Competitions for Young Mathematicians. 1st ed. 2017. Springer International Publishing.
Chicago-tyylinen lähdeviittausSoifer, Alexander. Competitions for Young Mathematicians. 1st Ed. 2017. Springer International Publishing, 2020.
MLA-viiteSoifer, Alexander. Competitions for Young Mathematicians. 1st Ed. 2017. Springer International Publishing, 2020.
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