York, M. J., & Idle, M. S. (2013). The three billy goats gruff. Child's World.
Chicagoスタイル(17版)引用形式York, M. J., , Molly Schaar Idle. The Three Billy Goats Gruff. Mankato, MN: Child's World, 2013.
MLA(8版)引用形式York, M. J., , Molly Schaar Idle. The Three Billy Goats Gruff. Child's World, 2013.
警告: この引用は必ずしも正確ではありません.