Virgil Ambrose Cruz, The Mark of the Beast

Cruz, Virgil Ambrose. The Mark of the Beast: A Study of the ΧΑΡΑΓΜΑ [CHARAGMA] in the Apocalypse. Amsterdam: Academische Pers N. V., 1973. 153 pp.

This thesis is a very important, but also quite neglected study. Cruz carefully surveys how the mark of the beast is used in Revelation.