Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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