National Council of Teachers of Mathematics. (1969). More topics in mathematics for elementary school teachers. [s.n.].
Lua i Stíl Chicago (17ú heag.)National Council of Teachers of Mathematics. More Topics in Mathematics for Elementary School Teachers. Washington: [s.n.], 1969.
Lua MLA (9ú heag.)National Council of Teachers of Mathematics. More Topics in Mathematics for Elementary School Teachers. [s.n.], 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.