Harris, J. (1990). Early language development: Implications for clinical and educational practice. Routledge.
Chicago-referens (17:e uppl.)Harris, John. Early Language Development: Implications for Clinical and Educational Practice. London ; New York: Routledge, 1990.
MLA-referens (9:e uppl.)Harris, John. Early Language Development: Implications for Clinical and Educational Practice. Routledge, 1990.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.