APA (7th ed.) Citation

Tolkien, J. R. R., & Tolkien, C. (1989). The treason of Isengard: The history of The lord of the rings, part two. Houghton Mifflin Co..

Chicago Style (17th ed.) Citation

Tolkien, J. R. R., and Christopher Tolkien. The Treason of Isengard: The History of The Lord of the Rings, Part Two. Boston: Houghton Mifflin Co., 1989.

MLA (8th ed.) Citation

Tolkien, J. R. R., and Christopher Tolkien. The Treason of Isengard: The History of The Lord of the Rings, Part Two. Houghton Mifflin Co., 1989.