“A Remarkable Formula.” Trigonometric Delights, by Eli Maor, Princeton University Press, PRINCETON; OXFORD, 1998, pp. 139–144, www.jstor.org/stable/j.ctt1r2f46.22. Accessed 27 Jan. 2021.
Maor, E. (1998). A Remarkable Formula. In Trigonometric Delights (pp. 139-144). PRINCETON; OXFORD: Princeton University Press. Retrieved January 27, 2021, from http://www.jstor.org/stable/j.ctt1r2f46.22
Maor, Eli. "A Remarkable Formula." In Trigonometric Delights, 139-44. PRINCETON; OXFORD: Princeton University Press, 1998. Accessed January 27, 2021. http://www.jstor.org/stable/j.ctt1r2f46.22.
Export a RIS file (For EndNote, ProCite, Reference Manager, Zotero, Mendeley…)
Export a Text file (For BibTex)
Note: Always review your references and make any necessary corrections before using. Pay attention to names, capitalization, and dates.