Soifer, A. (2011). Colarado mathematical olympiad and further explorations: From the mountains of colouado to the peaks of mathematics. Springer.
Trích dẫn kiểu ChicagoSoifer, Alexander. Colarado Mathematical Olympiad and Further Explorations: From the Mountains of Colouado to the Peaks of Mathematics. New York: Springer, 2011.
Trích dẫn MLASoifer, Alexander. Colarado Mathematical Olympiad and Further Explorations: From the Mountains of Colouado to the Peaks of Mathematics. Springer, 2011.
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