National Council of Teachers of Mathematics, Cooney, T. J., & Hirsch, C. R. (1990). Teaching and learning mathematics in the 1990s. NCTM.
Čikaški stil citiranja (17. izdanje)National Council of Teachers of Mathematics, Thomas J. Cooney, i Christian R. Hirsch. Teaching and Learning Mathematics in the 1990s. Reston, VA: NCTM, 1990.
MLA način citiranja (9. izdanje)National Council of Teachers of Mathematics, et al. Teaching and Learning Mathematics in the 1990s. NCTM, 1990.
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