Duffy, F. R. (197). Exploring the Child's World. Philadelphia.
Chicagoスタイル(17版)引用形式Duffy, Francis R. Exploring the Child's World. Philadelphia, 197.
MLA(8版)引用形式Duffy, Francis R. Exploring the Child's World. Philadelphia, 197.
警告: この引用は必ずしも正確ではありません.