Add: Folk Songs of Greece by Susan and Ted Alevizos (Oak Publications 1968.) Not in Google Books. An excellent book giving most of the best known traditional Greek folk songs in vocal score with chords and lyrics in Greek and transliterated Greek, with accompanying literal English translations. This is the one book that any fan or performers of Greek folk songs should have. Not in print but readily available used, though a bit expensive. Libraries often have it.

Jon Corelis
Poems, Plays, Songs, and Essays