Lua APA (7ú heag.)

Não informado. (1971). Early Child Development and Care. Gordon and Breach Science Publishers.

Lua i Stíl Chicago (17ú heag.)

Não informado. Early Child Development and Care. London: Gordon and Breach Science Publishers, 1971.

Lua MLA (8ú heag.)

Não informado. Early Child Development and Care. Gordon and Breach Science Publishers, 1971.

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