Opie, I. A. (1993). The people in the playground. Oxford University Press.
Chicagoスタイル(17版)引用形式Opie, Iona Archibald. The People in the Playground. Oxford: Oxford University Press, 1993.
MLA(9版)引用形式Opie, Iona Archibald. The People in the Playground. Oxford University Press, 1993.
警告: この引用は必ずしも正確ではありません.