^Hammarström, Harald; Forkel, Robert; Haspelmath, Martin; Bank, Sebastian (编). Halang Doan. Glottolog 2.7. Jena: Max Planck Institute for the Science of Human History. 2016.
Mole, Robert L. (1968) Peoples of Tribes of South Vietnam. vol. 1. Chapter 9.
Schrock, Joann, William Stockton Jr., Elaine Murphy, and Marilou Fromme. (1966) Minority Groups in the Republic of Vietnam. Chapter 4.
Schliesinger, Joachim. 1998. Hill Tribes of Vietnam. vol 2 Profile of the Existing Hill Tribe Groups. (Schliesinger lumps Doan in with the Gie-Trieng ethnic group p.28).
