APA (7th ed.) Citation

Tolkien, J. R. R., & Tolkien, C. (1999). The Silmarillion. HarperCollins.

Chicago Style (17th ed.) Citation

Tolkien, J. R. R., and Christopher Tolkien. The Silmarillion. London: HarperCollins, 1999.

MLA (9th ed.) Citation

Tolkien, J. R. R., and Christopher Tolkien. The Silmarillion. HarperCollins, 1999.

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