Lua APA (7ú heag.)

Blackman, J. A. (1995). Innovations in practice in early intervention. Aspen.

Lua i Stíl Chicago (17ú heag.)

Blackman, James A. Innovations in Practice in Early Intervention. Gaithersburg, Md: Aspen, 1995.

Lua MLA (9ú heag.)

Blackman, James A. Innovations in Practice in Early Intervention. Aspen, 1995.

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