Isadora, R. (2009). Happy belly, happy smile. Harcourt Children's Books.
Chicagoスタイル(17版)引用形式Isadora, Rachel. Happy Belly, Happy Smile. Boston: Harcourt Children's Books, 2009.
MLA(8版)引用形式Isadora, Rachel. Happy Belly, Happy Smile. Harcourt Children's Books, 2009.
警告: この引用は必ずしも正確ではありません.