Association for Supervision and Curriculum Development. Committee on the Three R's in the Elementary School. (1952). The three R's in the elementary school. s. n.
Lua i Stíl Chicago (17ú heag.)Association for Supervision and Curriculum Development. Committee on the Three R's in the Elementary School. The Three R's in the Elementary School. Washington: s. n, 1952.
Lua MLA (9ú heag.)Association for Supervision and Curriculum Development. Committee on the Three R's in the Elementary School. The Three R's in the Elementary School. s. n, 1952.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.