APA (7th ed.) Citation

Tolkien, J. R. R., Tolkien, C., & Lee, A. (2018). The fall of Gondolin (First U.S. edition.). Houghton Mifflin Harcourt.

Chicago Style (17th ed.) Citation

Tolkien, J. R. R., Christopher Tolkien, and Alan Lee. The Fall of Gondolin. First U.S. edition. Boston: Houghton Mifflin Harcourt, 2018.

MLA (9th ed.) Citation

Tolkien, J. R. R., et al. The Fall of Gondolin. First U.S. edition. Houghton Mifflin Harcourt, 2018.