Koschmann, Timothy. “Concepts and Categories.” The Journal of the Learning Sciences, vol. 14, no. 1, 2005, pp. 111–113., www.jstor.org/stable/1466884. Accessed 28 Nov. 2020.
Koschmann, T. (2005). Concepts and Categories. The Journal of the Learning Sciences, 14(1), 111-113. Retrieved November 28, 2020, from http://www.jstor.org/stable/1466884
Koschmann, Timothy. "Concepts and Categories." The Journal of the Learning Sciences 14, no. 1 (2005): 111-13. Accessed November 28, 2020. http://www.jstor.org/stable/1466884.
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