^Hattaway, Paul (2004). Peoples of the Buddhist World: A Christian Prayer Diary. William Carey Library. p. 352. ISBN978-0-87808-361-9. More than 8,000 Yoy people live on both sides of the Mekong River in Southeast Asia. The majority-about 7,000-inhabit villages in the north-east Thailand province of Sakhon Nakhon. They are dispersed over three districts: Akat Amnuai, Phang Khon² and Sawang Daen Din.
^Schliesinger, Joachim (2003). Ethnic Groups of Laos: Profiles of Austro-Thai-speaking peoples. White Lotus Press. p. 165. ISBN978-974-480-037-4.
