Betts, E. A., & Wilson, P. (1947). Guidebook for teachers on initial stages of reading readiness. Row, Peterson & Company.
Lua i Stíl Chicago (17ú heag.)Betts, Emmett A., agus Phyllis Wilson. Guidebook for Teachers on Initial Stages of Reading Readiness. Evanston, Illinois: Row, Peterson & Company, 1947.
Lua MLA (8ú heag.)Betts, Emmett A., agus Phyllis Wilson. Guidebook for Teachers on Initial Stages of Reading Readiness. Row, Peterson & Company, 1947.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.