“Front Matter.” Medieval Military Technology, by Kelly DeVries, University of Toronto Press, 1992, pp. i-iv, www.jstor.org/stable/10.3138/j.ctt2tv1qn.1. Accessed 19 Sept. 2020.
DeVries, K. (1992). Front Matter. In Medieval Military Technology (pp. I-Iv). University of Toronto Press. Retrieved September 19, 2020, from http://www.jstor.org/stable/10.3138/j.ctt2tv1qn.1
DeVries, Kelly. "Front Matter." In Medieval Military Technology, I-Iv. University of Toronto Press, 1992. Accessed September 19, 2020. http://www.jstor.org/stable/10.3138/j.ctt2tv1qn.1.
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