APA (7th ed.) Citation

Jones, D. W. (1990). Castle in the air. Greenwillow Books.

Chicago Style (17th ed.) Citation

Jones, Diana Wyne. Castle in the Air. New York: Greenwillow Books, 1990.

MLA (9th ed.) Citation

Jones, Diana Wyne. Castle in the Air. Greenwillow Books, 1990.

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