Franco Mormando, 'Just as your lips approach the lips of your brothers: Judas Iscariot and the Kiss of Betrayal' in F. Mormando, ed., Saints and Sinners: Caravaggio and the Baroque Image (Chicago: Distrib. by University of Chicago Press, 1999), p. 183. Mormando's essay gives an overview of contemporary commentary on the scene of the betrayal of Judas in the most popular spiritual literature available to Caravaggio as he prepared to depict this scene.
Herrmann Fiore, Kristina (January 1995). “Caravaggio's 'Taking of Christ' and Dürer's Woodcut of 1509”. The Burlington Magazine137 (112): 24–27. JSTOR886401.
