APA-čujuhus (7. p.)
ebrary, Inc, Campbell, S. R., & Zazkis, R. (2002). Learning and teaching number theory: Research in cognition and instruction. Ablex Pub..
Chicago-čujuhus (17. p.)
ebrary, Inc, Stephen R. Campbell, juo Rina Zazkis. Learning and Teaching Number Theory: Research in Cognition and Instruction. Westport, Conn.: Ablex Pub., 2002.
MLA-čujuhus (9. p.)
ebrary, Inc, et al. Learning and Teaching Number Theory: Research in Cognition and Instruction. Ablex Pub., 2002.
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