APA (7th ed.) Citation

Tolkien, J. R. R., & Tolkien, C. (1988). The return of the shadow: The history of The lord of the rings, part one. Houghton Mifflin.

Chicago Style (17th ed.) Citation

Tolkien, J. R. R., and Christopher Tolkien. The Return of the Shadow: The History of The Lord of the Rings, Part One. Boston: Houghton Mifflin, 1988.

MLA (8th ed.) Citation

Tolkien, J. R. R., and Christopher Tolkien. The Return of the Shadow: The History of The Lord of the Rings, Part One. Houghton Mifflin, 1988.