Leitzel, J. R. C. (1991). A call for change: Recommendations for the mathematical preparation of teachers of mathematics. The Mathematical Association of America.
Citace podle Chicago (17th ed.)Leitzel, James R. C. A Call for Change: Recommendations for the Mathematical Preparation of Teachers of Mathematics. Washington, D.C: The Mathematical Association of America, 1991.
Citace podle MLA (9th ed.)Leitzel, James R. C. A Call for Change: Recommendations for the Mathematical Preparation of Teachers of Mathematics. The Mathematical Association of America, 1991.
Upozornění: Tyto citace jsou generovány automaticky. Nemusí být zcela správně podle citačních pravidel..