APA (7th ed.) Citation

Helen Oxenbury. (1969). The Quangle Wangle's. Mammoth.

Chicago Style (17th ed.) Citation

Helen Oxenbury. The Quangle Wangle's. London: Mammoth, 1969.

MLA (9th ed.) Citation

Helen Oxenbury. The Quangle Wangle's. Mammoth, 1969.

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