SGK. “Preface.” A Mathematician Comes of Age, by Steven G. Krantz, 1st ed., Mathematical Association of America, Washington, DC, 2012, pp. xiii-xvi. JSTOR, www.jstor.org/stable/10.4169/j.ctt13x0n4t.3. Accessed 27 July 2021.
SGK. (2012). Preface. In Krantz S. (Author), A Mathematician Comes of Age (pp. Xiii-Xvi). Washington, DC: Mathematical Association of America. Retrieved July 27, 2021, from http://www.jstor.org/stable/10.4169/j.ctt13x0n4t.3
SGK. "Preface." In A Mathematician Comes of Age, by Krantz Steven G., Xiii-vi. Washington, DC: Mathematical Association of America, 2012. Accessed July 27, 2021. http://www.jstor.org/stable/10.4169/j.ctt13x0n4t.3.
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