McLeod, Robert M. “PREFACE.” The Generalized Riemann Integral, by ROBERT M. McLEOD, 1st ed., vol. 20, Mathematical Association of America, 1980, pp. vii-viii, www.jstor.org/stable/10.4169/j.ctt5hhb4z.2. Accessed 4 Aug. 2020.
McLeod, R. (1980). PREFACE. In McLEOD R. (Author), The Generalized Riemann Integral (pp. Vii-Viii). Mathematical Association of America. Retrieved August 4, 2020, from www.jstor.org/stable/10.4169/j.ctt5hhb4z.2
McLeod, Robert M. "PREFACE." In The Generalized Riemann Integral, by McLEOD ROBERT M., Vii-iii. Mathematical Association of America, 1980. Accessed August 4, 2020. www.jstor.org/stable/10.4169/j.ctt5hhb4z.2.
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