Harris, J. (1990). Early language development: Implications for clinical and educational practice. Routledge.
Lua i Stíl Chicago (17ú heag.)Harris, John. Early Language Development: Implications for Clinical and Educational Practice. London: Routledge, 1990.
Lua MLA (9ú heag.)Harris, John. Early Language Development: Implications for Clinical and Educational Practice. Routledge, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.