APA-ийн эшлэл(7 дахь хэвлэлт)

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

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

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

MLA -ийн эшлэл (9 дэх хэвлэлт)

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