APA (7th ed.) Citation

Tolkien, J. R. R., Tolkien, C., Lee, C., & Rinne, P. (2007). The children of Húrin (Unabridged.). HarperCollinsAudioBooks.

Chicago Style (17th ed.) Citation

Tolkien, J. R. R., Christopher Tolkien, Christopher Lee, and Peter Rinne. The Children of Húrin. Unabridged. London: HarperCollinsAudioBooks, 2007.

MLA (8th ed.) Citation

Tolkien, J. R. R., et al. The Children of Húrin. Unabridged. HarperCollinsAudioBooks, 2007.