“Euler’s Wonderful Identity.” Gamma: Exploring Euler's Constant, by Julian Havil and Freeman Dyson, Princeton University Press, PRINCETON; OXFORD, 2003, pp. 61–64, www.jstor.org/stable/j.ctt7sd75.12. Accessed 8 July 2020.
Havil, J., & Dyson, F. (2003). Euler’s Wonderful Identity. In Gamma: Exploring Euler's Constant (pp. 61-64). PRINCETON; OXFORD: Princeton University Press. Retrieved July 8, 2020, from www.jstor.org/stable/j.ctt7sd75.12
Havil, Julian, and Freeman Dyson. "Euler’s Wonderful Identity." In Gamma: Exploring Euler's Constant, 61-64. PRINCETON; OXFORD: Princeton University Press, 2003. Accessed July 8, 2020. www.jstor.org/stable/j.ctt7sd75.12.
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