Cita APA (7a ed.)

Opie, I. A., & Opie, P. (1967). The lore and language of schoolchildren. Oxford University Press.

Cita Chicago Style (17a ed.)

Opie, Iona Archibald, y Peter Opie. The Lore and Language of Schoolchildren. London [etc.]: Oxford University Press, 1967.

Cita MLA (9a ed.)

Opie, Iona Archibald, y Peter Opie. The Lore and Language of Schoolchildren. Oxford University Press, 1967.