Sauvy, J., & Sauvy, S. (1974). The child's discovery of space. Penguin Educaction.
芝加哥风格引文Sauvy, Jean, 与 Simonne Sauvy. The Child's Discovery of Space. Harmondsworth, Eng.: Penguin Educaction, 1974.
MLA引文Sauvy, Jean, 与 Simonne Sauvy. The Child's Discovery of Space. Penguin Educaction, 1974.
警告：这些引文格式不一定是100％准确.