Jean Piaget Society. (1986). Cognitive development. Ablex Pub. Corp..
Chicagoスタイル(17版)引用形式Jean Piaget Society. Cognitive Development. Norwood, N.J.: Ablex Pub. Corp., 1986.
MLA(9版)引用形式Jean Piaget Society. Cognitive Development. Ablex Pub. Corp., 1986.
警告: この引用は必ずしも正確ではありません.