^Hammarström, Harald; Forkel, Robert; Haspelmath, Martin; Bank, Sebastian (編). Lopnor. Glottolog 2.7. Jena: Max Planck Institute for the Science of Human History. 2016.
^Hammarström, Harald; Forkel, Robert; Haspelmath, Martin; Bank, Sebastian (編). Lop. Glottolog 2.7. Jena: Max Planck Institute for the Science of Human History. 2016.