Michaud, Jean. Historical Dictionary of the Peoples of the Southeast Asian Massif (Historical Dictionaries of Peoples and Cultures) Scarecrow Press, 19 avril 2006. (ISBN0810865033), 9780810865037. p. 209.
Cha, Dia (Learning through folklore series). Teaching with Folk Stories of the Hmong: An Activity Book. Libraries Unlimited, 2000. (ISBN1563086689), 9781563086687. p. 1.
Keith, Charles. Catholic Vietnam: A Church from Empire to Nation (Volume 5 of From Indochina to Vietnam: Revolution and War in a Global Perspective Series). University of California Press, 2012. (ISBN0520272471), 9780520272477. p. 123.
