Goodlad, J. I., & Anderson, R. H. (1987). The nongraded elementary school (Rev. edition, Reissued with a new introd.). Teachers College, Columbia University.
Lua i Stíl Chicago (17ú heag.)Goodlad, John I., agus Robert Henry Anderson. The Nongraded Elementary School. Rev. edition, Reissued with a new introd. New York: Teachers College, Columbia University, 1987.
Lua MLA (8ú heag.)Goodlad, John I., agus Robert Henry Anderson. The Nongraded Elementary School. Rev. edition, Reissued with a new introd. Teachers College, Columbia University, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.