“Problem Index.” Sink or Float?: Thought Problems in Math and Physics, by Keith Kendig, 1st ed., vol. 33, Mathematical Association of America, 2008, pp. 369–372, www.jstor.org/stable/10.4169/j.ctt6wpwdk.28. Accessed 20 June 2021.
Kendig, K. (2008). Problem Index. In Sink or Float?: Thought Problems in Math and Physics (pp. 369-372). Mathematical Association of America. Retrieved June 20, 2021, from http://www.jstor.org/stable/10.4169/j.ctt6wpwdk.28
Kendig, Keith. "Problem Index." In Sink or Float?: Thought Problems in Math and Physics, 369-72. Mathematical Association of America, 2008. Accessed June 20, 2021. http://www.jstor.org/stable/10.4169/j.ctt6wpwdk.28.
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