APA (7th ed.) Citation

Opie, I. A. (1993). The people in the playground. Oxford University Press.

Chicago Style (17th ed.) Citation

Opie, Iona Archibald. The People in the Playground. Oxford: Oxford University Press, 1993.

MLA (9th ed.) Citation

Opie, Iona Archibald. The People in the Playground. Oxford University Press, 1993.

Warning: These citations may not always be 100% accurate.