APA (7th ed.) Citation

Tolkien, J. R. R., & Tolkien, C. (2020). The history of Middle-Earth (First U.S. edition.). Houghton Mifflin Harcourt.

Chicago Style (17th ed.) Citation

Tolkien, J. R. R., and Christopher Tolkien. The History of Middle-Earth. First U.S. edition. Boston: Houghton Mifflin Harcourt, 2020.

MLA (8th ed.) Citation

Tolkien, J. R. R., and Christopher Tolkien. The History of Middle-Earth. First U.S. edition. Houghton Mifflin Harcourt, 2020.

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