John Milton (2013). “Paradise Lost Simplified!: Includes Modern Translation, Study Guide, Historical Context, Biography, and Character Index”, p.109, BookCaps Study Guides
John Milton (1873). “The Poetical Works of John Milton: With a Life of the Author, Preliminary Dissertations on Each Poem, Notes Critical and Explanatory, an Index to the Subjects of Paradise Lost, and a Verbal Index to All the Poems”, p.380