APA (7th ed.) Citation

(1997). Unicorns! Unicorns! (1. publ.). Orchard Books.

Chicago Style (17th ed.) Citation

Unicorns! Unicorns! 1. publ. London: Orchard Books, 1997.

MLA (9th ed.) Citation

Unicorns! Unicorns! 1. publ. Orchard Books, 1997.

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