Various, Encyclopaedia Britannica, 11th Edition…
“ CITHARA (Assyrian chetarah; Gr. κιθάρα; Lat. cithara; perhaps Heb. kinura, kinnor) , one of the most ancient stringed instruments, traced back to 1700 B.C. among the Semitic races, in Egypt, Assyria, Asia Minor, Greece and the Roman empire, whence the use of it spread over Europe. The main feature of the Greek kithara, its shallow sound-chest, being the most important part of it, is also that in which developments are most noticeable ”
