“Front Matter.” Trigonometric Delights, by Eli Maor, Princeton University Press, PRINCETON; OXFORD, 1998, pp. i-vi, www.jstor.org/stable/j.ctt1r2f46.1. Accessed 19 Jan. 2021.
Maor, E. (1998). Front Matter. In Trigonometric Delights (pp. I-Vi). PRINCETON; OXFORD: Princeton University Press. Retrieved January 19, 2021, from http://www.jstor.org/stable/j.ctt1r2f46.1
Maor, Eli. "Front Matter." In Trigonometric Delights, I-Vi. PRINCETON; OXFORD: Princeton University Press, 1998. Accessed January 19, 2021. http://www.jstor.org/stable/j.ctt1r2f46.1.
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