APA (7th ed.) Citation

Tolkien, J. R. R. (1997). The hobbit or there and back again (Revised ed.). Ballantine Books.

Chicago Style (17th ed.) Citation

Tolkien, J. R. R. The Hobbit or There and Back Again. Revised ed. New York: Ballantine Books, 1997.

MLA (9th ed.) Citation

Tolkien, J. R. R. The Hobbit or There and Back Again. Revised ed. Ballantine Books, 1997.