Irving, Ron. Beyond the Quadratic Formula. 1st ed., Mathematical Association of America, 2013, www.jstor.org/stable/10.4169/j.ctt5hh9sp, Accessed 1 Aug. 2021.
Irving, R. (2013). Beyond the Quadratic Formula. Mathematical Association of America. Retrieved August 1, 2021, from http://www.jstor.org/stable/10.4169/j.ctt5hh9sp
Irving, Ron. Beyond the Quadratic Formula. Mathematical Association of America, 2013. Accessed August 1, 2021. http://www.jstor.org/stable/10.4169/j.ctt5hh9sp.
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