APA (7th ed.) Citation

Rateliff, J. D., & Tolkien, J. R. R. (2011). The history of the Hobbit (Rev. and expanded one-vol. ed.). HarperCollins.

Chicago Style (17th ed.) Citation

Rateliff, John D., and J. R. R. Tolkien. The History of the Hobbit. Rev. and expanded one-vol. ed. London: HarperCollins, 2011.

MLA (8th ed.) Citation

Rateliff, John D., and J. R. R. Tolkien. The History of the Hobbit. Rev. and expanded one-vol. ed. HarperCollins, 2011.