John Milton, Henry John Todd (1852). “The Poetical Works of John Milton: With Notes of Various Authors; and with Some Account of the Life and Writings of Milton, Derived Principally from Original Documents in Her Majesty's State-paper Office”, p.164
John Milton (2013). “Paradise Lost Simplified!: Includes Modern Translation, Study Guide, Historical Context, Biography, and Character Index”, p.452, BookCaps Study Guides
John Milton (1824). “The Poetical Works of John Milton: With Notes of Various Authors, Principally from the Edition of Thomas Newton, Charles Dunster, and Thomas Warton, to which is Prefixed, Newton's Life of Milton”, p.27