Dean's Book of Revelation;
Alexander Ramsay's “Revelation and Johannine Epistles”, in Westminister New Test.;
Briggs' Messiah of the Apostles;
Barton, art. “The Apocalypse and Recent Criticism”, in Amer. Journ. of Theol., Apr. 1884;
Porter, art. “Revelation”, in Hastings' Dictionary of the Bible;
Bousset, art. “Apocalypse”, in the Encyclopaedia Biblica.
Moffatt, art. “Wellhausen and Others on the Apocalypse”, in the Expositor, Mar. 1909;
Charles, Studies in the Apocalypse;
Charles, Revelation of St. John (I. C. C.);
Beckwith, Apocalypse of John.