Não informado. (1971). Early Child Development and Care. Gordon and Breach Science Publishers.
Style de citation Chicago (17e éd.)Não informado. Early Child Development and Care. London: Gordon and Breach Science Publishers, 1971.
Style de citation MLA (8e éd.)Não informado. Early Child Development and Care. Gordon and Breach Science Publishers, 1971.
Attention : ces citations peuvent ne pas être correctes à 100%.