Beard, R. M. (2006). An outline of Piaget's development psychology. Routledge.
Chicagoスタイル(17版)引用形式Beard, Ruth M. An Outline of Piaget's Development Psychology. London: Routledge, 2006.
MLA(9版)引用形式Beard, Ruth M. An Outline of Piaget's Development Psychology. Routledge, 2006.
警告: この引用は必ずしも正確ではありません.