Robert Van Kampen, The Sign: Bible Prophesy Concerning the End Times, expanded edition (Wheaton, IL: Crossway Books, 1993 {1992}).
Billy Graham, Approaching Hoofbeats: The Four Horsemen of the Apocalypse, (Minneapolis, MN: Grason, 1983),
Jack Van Impe, Revelation Revealed: A Verse-by-Verse Study, revised, eighth printing, (Dallas: Word Publishing, 1996 {first printing 1982, revised 1992}).
Tim LaHaye, Revelation: Illustrated and Made Plain, revised, (Grand Rapids, MI: Zondervon, 1975 {first printing 1973}).