- Sylvia Plath. Ariel (Faber Modern Classics). London: Faber and Faber, 2015.
- Dante Alighieri, trans. Mark Musa. The Divine Comedy: Inferno. New York: Penguin Books, 2003; originally 1320.
- Susan Sontag. Illness as Metaphor and AIDS and Its Metaphors. New York: Picador, 1990.
- Tracy Brain. "Medicine in Sylvia Plath's October Poems." Plath Profiles, Indiana University. 17 May 2021. <https://scholarworks.iu.edu/journals/index.php/plath/article/download/4270/3906/>.
- Karen V. Kukil. "The Fires of Heaven and Hell: Sylvia Plath’s ‘Fever 103°’." Faber and Faber. 6 Sept 2018. 17 May 2021. <https://www.faber.co.uk/blog/sylvia-plath-fever-103/>.
- Aiyana Edmund. "The Tragic Relationship of Sylvia Plath and Ted Hughes." Literary Ladies Guide. 7 Mar 2018 . 16 May 2021. <https://www.literaryladiesguide.com/literary-musings/relationship-sylvia-plath-ted-hughes/>.
- Danuta Kean. "Unseen Sylvia Plath letters claim domestic abuse by Ted Hughes." The Guardian. 11 Apr 2017. 16 May 2021. <https://www.theguardian.com/books/2017/apr/11/unseen-sylvia-plath-letters-claim-domestic-abuse-by-ted-hughes>.
- David Trinidad. "“Viciousness in the Kitchen”: The Backstory of Sylvia Plath’s “Lesbos”." Blackbird. Fall 2015. 14 May 2021. <https://blackbird.vcu.edu/v14n2/nonfiction/trinidad_d/kitchen_page.shtml>.
- Karen Swallow Prior. "The 'Always' and 'Never' Life of Sylvia Plath." The Atlantic. 8 Feb 2013. 14 May 2021. <https://www.theatlantic.com/sexes/archive/2013/02/the-always-and-never-life-of-sylvia-plath/272707/>.
- "Ultimate Guide to Camellia Flower Meaning and Uses." 14 May 2021. <https://www.petalrepublic.com/camellia-flower-meaning/>.
- Marjorie Perloff. "The Two Ariels: The (Re)making Of The Sylvia Plath Canon." The American Poetry Review. 1984. 14 May 2021. <https://www.jstor.org/stable/27777491?seq=1>.
- Jennifer Holden-Kirwan. "Contemplating Faith: Sylvia Plath's Spiritual Journey." Christianity and Literature. 1999. 14 May 2021. <https://www.jstor.org/stable/44312695?seq=1>.
- Editorial Staff. "How We Conquered Consumption." American Lung Association. 1 Jan 2016. 17 May 2021. <https://www.lung.org/blog/how-we-conquered-consumption#:~:text=Tuberculosis%2C%20also%20known%20as%20consumption,death%20in%20the%20United%20States.>.