แม่แบบ:R:trk:Tekin1979
Tekin, Talât (1979), chapter Once More Zetacism and Sigmatism, in Central Asiatic Journal[1], volume 23, Harrassowitz Verlag, pages 118-137
Tekin, Talât (1979), chapter Once More Zetacism and Sigmatism, in Central Asiatic Journal[1], volume 23, Harrassowitz Verlag, pages 118-137