Sauvy, J., & Sauvy, S. (1974). The child's discovery of space. Penguin Educaction.
Chicagoスタイル(17版)引用形式Sauvy, Jean, , Simonne Sauvy. The Child's Discovery of Space. Harmondsworth, Eng.: Penguin Educaction, 1974.
MLA(9版)引用形式Sauvy, Jean, , Simonne Sauvy. The Child's Discovery of Space. Penguin Educaction, 1974.
警告: この引用は必ずしも正確ではありません.