Harms, T., Cryer, D., & Clifford, R. M. (2006). Infant/toddler environment rating scale (Rev. ed.). Teachers College Press.
Lua i Stíl Chicago (17ú heag.)Harms, Thelma, Debby Cryer, agus Richard M. Clifford. Infant/toddler Environment Rating Scale. Rev. ed. New York: Teachers College Press, 2006.
Lua MLA (8ú heag.)Harms, Thelma, et al. Infant/toddler Environment Rating Scale. Rev. ed. Teachers College Press, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.