Não informado. (1971). Early Child Development and Care. Gordon and Breach Science Publishers.
Chicago-Zitierstil (17. Ausg.)Não informado. Early Child Development and Care. London: Gordon and Breach Science Publishers, 1971.
MLA-Zitierstil (8. Ausg.)Não informado. Early Child Development and Care. Gordon and Breach Science Publishers, 1971.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.