National Council of Teachers of Mathematics. (1973). Geometry in the mathematics curriculum. NCTM,].
Cita Chicago (17th ed.)National Council of Teachers of Mathematics. Geometry in the Mathematics Curriculum. [Reston, VA: NCTM,], 1973.
Cita MLA (9th ed.)National Council of Teachers of Mathematics. Geometry in the Mathematics Curriculum. NCTM,], 1973.
Atenció: Aquestes cites poden no estar 100% correctes.