“About the Author.” Counterexamples in Calculus, by Sergiy Klymchuk, REV - Revised, 1 ed., Mathematical Association of America, Washington, DC, 2010, pp. 101–101, www.jstor.org/stable/10.4169/j.ctt5hh9t5.17. Accessed 29 July 2021.
Klymchuk, S. (2010). About the Author. In Counterexamples in Calculus (p. 101). Washington, DC: Mathematical Association of America. Retrieved July 29, 2021, from http://www.jstor.org/stable/10.4169/j.ctt5hh9t5.17
Klymchuk, Sergiy. "About the Author." In Counterexamples in Calculus, 101. Washington, DC: Mathematical Association of America, 2010. Accessed July 29, 2021. http://www.jstor.org/stable/10.4169/j.ctt5hh9t5.17.
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