Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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