Mathematical Association of America. Committee on the Mathematical Education of Teachers & Leitzel, J. R. C. (1991). A call for change: Recommendations for the mathematical preparation of teachers of mathematics. Mathematical Association of America.
Cita Chicago Style (17a ed.)Mathematical Association of America. Committee on the Mathematical Education of Teachers y James R. C. Leitzel. A Call for Change: Recommendations for the Mathematical Preparation of Teachers of Mathematics. Washington, D.C.: Mathematical Association of America, 1991.
Cita MLA (8a ed.)Mathematical Association of America. Committee on the Mathematical Education of Teachers y James R. C. Leitzel. A Call for Change: Recommendations for the Mathematical Preparation of Teachers of Mathematics. Mathematical Association of America, 1991.