Leach, P. Babyhood: Infant development from birth to two years. Penguin Books.
Chicagoスタイル(17版)引用形式Leach, Penelope. Babyhood: Infant Development from Birth to Two Years. Harmondsworth: Penguin Books.
MLA(9版)引用形式Leach, Penelope. Babyhood: Infant Development from Birth to Two Years. Penguin Books.
警告: この引用は必ずしも正確ではありません.