APA (7th ed.) Citation

Tolkien, J. R. R., & Tolkien, C. (1992). Treason of Isengard: The history of the Lord of the Rings, part two. Grafton.

Chicago Style (17th ed.) Citation

Tolkien, J. R. R., and Christopher Tolkien. Treason of Isengard: The History of the Lord of the Rings, Part Two. London: Grafton, 1992.

MLA (8th ed.) Citation

Tolkien, J. R. R., and Christopher Tolkien. Treason of Isengard: The History of the Lord of the Rings, Part Two. Grafton, 1992.