APA-viite (7. p.)
ebrary, Inc, Harel, G., & Confrey, J. (1994). The Development of multiplicative reasoning in the learning of mathematics. State University of New York Press.
Chicago-viite (17. p.)
ebrary, Inc, Guershon Harel, ja Jere Confrey. The Development of Multiplicative Reasoning in the Learning of Mathematics. Albany: State University of New York Press, 1994.
MLA-viite (9. p.)
ebrary, Inc, et al. The Development of Multiplicative Reasoning in the Learning of Mathematics. State University of New York Press, 1994.
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