Cita APA (7th ed.)

Harris, J. (1990). Early language development: Implications for clinical and educational practice. Routledge.

Cita Chicago (17th ed.)

Harris, John. Early Language Development: Implications for Clinical and Educational Practice. London ; New York: Routledge, 1990.

Cita MLA (9th ed.)

Harris, John. Early Language Development: Implications for Clinical and Educational Practice. Routledge, 1990.