Concordances -- Jan Willem Drijvers
- G. Archbold, “Concordance to the Works of Ammianus Marcellinus,” Phoenix Supplementary Volume, Toronto 1979 (on microfiche: University of Toronto Press, 1980)- M. Chiabò, Index verborum Ammiani Marcellini, 2 vols, Hildesheim/Zürich/New York 1983
- I. Viansino, Ammiani Marcellini Rerum Gestarum Lexicon, 2 vols, Hildesheim/Zürich/New York 1985