John Bunyan (2013). “The Pilgrim’s Progress Simplified: Includes Modern Translation, Study Guide, Historical Context, Biography, and Character Index”, p.171, BookCaps Study Guides
John Bunyan (1850). “The pilgrim's progress, The holy war, and other selected works, arranged by the editors of Sturm's Devotions. Tallis's pictorial ed”, p.2
John Bunyan (2013). “The Pilgrim’s Progress Simplified: Includes Modern Translation, Study Guide, Historical Context, Biography, and Character Index”, p.411, BookCaps Study Guides