APA (7th ed.) Citation

Lewis, C. S. (2001). The horse and his boy: 3. HarperCollins Children's Books.

Chicago Style (17th ed.) Citation

Lewis, C. S. The Horse and His Boy: 3. New York: HarperCollins Children's Books, 2001.

MLA (9th ed.) Citation

Lewis, C. S. The Horse and His Boy: 3. HarperCollins Children's Books, 2001.