APA-čujuhus (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-čujuhus (17. p.)
ebrary, Inc, Guershon Harel, juo Jere Confrey. The Development of Multiplicative Reasoning in the Learning of Mathematics. Albany: State University of New York Press, 1994.
MLA-čujuhus (9. p.)
ebrary, Inc, et al. The Development of Multiplicative Reasoning in the Learning of Mathematics. State University of New York Press, 1994.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.