Flapan, Erica. “How to Be a Good Teacher Is an Undecidable Problem.” The Best Writing on Mathematics 2012, edited by Mircea Pitici, by DAVID MUMFORD, Princeton University Press, PRINCETON; OXFORD, 2012, pp. 141–148, www.jstor.org/stable/j.cttq955w.17. Accessed 22 Oct. 2020.
Flapan, E. (2012). How to Be a Good Teacher Is an Undecidable Problem. In MUMFORD D. (Author) & Pitici M. (Ed.), The Best Writing on Mathematics 2012 (pp. 141-148). PRINCETON; OXFORD: Princeton University Press. Retrieved October 22, 2020, from http://www.jstor.org/stable/j.cttq955w.17
Flapan, Erica. "How to Be a Good Teacher Is an Undecidable Problem." In The Best Writing on Mathematics 2012, edited by Pitici Mircea, by MUMFORD DAVID, 141-48. PRINCETON; OXFORD: Princeton University Press, 2012. Accessed October 22, 2020. http://www.jstor.org/stable/j.cttq955w.17.
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