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.