Cooney, T. J. (1990). Teaching and learning mathematics in the 1990s. National Council of Teachers of Mathematics.
Lua i Stíl Chicago (17ú heag.)Cooney, Thomas J. Teaching and Learning Mathematics in the 1990s. Reston, Va: National Council of Teachers of Mathematics, 1990.
Lua MLA (9ú heag.)Cooney, Thomas J. Teaching and Learning Mathematics in the 1990s. National Council of Teachers of Mathematics, 1990.
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