The Greek text of Revelation 19 in Codex Sinaiticus (British Library, Add. 43725; from 4th century AD). The term "hallelujah" (in Greek majuscule: ἈΛΛΗΛΟΎΪΑ) occurs 4 times in this chapter (Revelation 19:1,3,4,6) as highlighted in red frames.
^Davids, Peter H (1982). I Howard Marshall and W Ward Gasque (ed.). New International Greek Testament Commentary: The Epistle of James (Repr. ed.). Grand Rapids, Mich.: Eerdmans. ISBN0802823882.
^Evans, Craig A (2005). Craig A Evans (ed.). Bible Knowledge Background Commentary: John, Hebrews-Revelation. Colorado Springs, Colo.: Victor. ISBN0781442281.
^F. L. Cross, The Oxford Dictionary of the Christian Church, (New York: Oxford University Press, 1997), 45