^De Vaan, Michiel (2008) “augeō”, inEtymological Dictionary of Latin and the other Italic Languages (Leiden Indo-European Etymological Dictionary Series; 7), Leiden, Boston: Brill,→ISBN,pages61–62
^Moreno Morani (1984) “Augurium augur augustus: una questione di metodo”, inGlotta (in Italian), volume62,→JSTOR, pages65–71
“augustus”, inCharlton T. Lewis (1891)An Elementary Latin Dictionary, New York: Harper & Brothers
"augustus", in Charles du Fresne du Cange’sGlossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
augustus inGaffiot, Félix (1934)Dictionnaire illustré latin-français, Hachette.