Andrew L. Sihler. 1995. New comparative grammar of Greek and Latin. New York (NY) & Oxford: Oxford University Press
Michael Weiss. 2009. Outline of the historical and comparative grammar of Latin. Ann Arbor (MI) & New York (NY): Beech Stave. (2nd, corrected printing, 2011.)
Birgits noter (Absalon) til de dele af Plautus som Guus har gennemgået