Tham khảo Tiếng_Xá_Phó

  1. Nordhoff, Sebastian; Hammarström, Harald; Forkel, Robert; Haspelmath, Martin biên tập (2013). “Laghuu”. Glottolog. Leipzig: Max Planck Institute for Evolutionary Anthropology.
  2. Raymond G. Gordon Jr., ed. 2005. Ethnologue: Languages of the World. 15th edition. Dallas: Summer Institute of Linguistics.