Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, ed. (2023). "Graeco-Phrygian". Glottolog 4.8. Jena, Jerman: Max Planck Institute for the Science of Human History.Pemeliharaan CS1: Tampilkan editors (link)
Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, ed. (2023). "Phrygian". Glottolog 4.8. Jena, Jerman: Max Planck Institute for the Science of Human History.Pemeliharaan CS1: Tampilkan editors (link)