Wheeler, R. E., & Wheeler, E. R. (1995). Modern mathematics for elementary school teachers (9th ed.). Brooks/Cole Pub. Co..
Lua i Stíl Chicago (17ú heag.)Wheeler, Ruric E., agus Ed R. Wheeler. Modern Mathematics for Elementary School Teachers. 9th ed. Pacific Grove: Brooks/Cole Pub. Co., 1995.
Lua MLA (9ú heag.)Wheeler, Ruric E., agus Ed R. Wheeler. Modern Mathematics for Elementary School Teachers. 9th ed. Brooks/Cole Pub. Co., 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.