Cita APA (7th ed.)

Arengo, S. (2001). The Ugly Duckling. Oxford University Press.

Cita Chicago (17th ed.)

Arengo, Sue. The Ugly Duckling. Oxford: Oxford University Press, 2001.

Cita MLA (8th ed.)

Arengo, Sue. The Ugly Duckling. Oxford University Press, 2001.