Eberhard, David M., Gary F. Simons, and Charles D. Fennig, eds. Ethnologue: Languages of the World. 25th ed. Dallas, Texas: SIL International, 2022. Accessed August 20, 2022.
SIL International Contributors. "ISO 639-3 Registration Authority: International Standard for Language Codes." Dallas, TX: SIL International. Accessed August 23, 2022.
SIL International Contributors. "ScriptSource: Index of Languages and Writing Systems." Dallas, Texas: SIL International. Created June 11, 2011. Accessed August 6, 2022.