Vaccaro, Chris. “’And One White tree’: The Cosmological Cross and the Arbor Vitae in J.R.R.Tolkien’s The Lord of the Rings and The Silmarillion”. Mallorn: The Journal of the Tolkien Society, no. 42 (April 7, 2021): 23–28. Accessed April 19, 2024. https://journals.tolkiensociety.org/mallorn/article/view/11.