Tangko
Классификация: Trans-New Guinea
·под угрозой исчезновения
Классификация: Trans-New Guinea
·под угрозой исчезновения
Endangered Languages Catalogue Project. Compiled by research teams at University of Hawai'i Mānoa and Institute for Language Information and Technology (LINGUIST List) at Eastern Michigan University . (2012) ·
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Ethnologue: Languages of the World, 18th Edition . (2015) · edited by Lewis, M. Paul, Gary F. Simons, and Charles D. Fennig · SIL International http://www.ethnologue.com
Upper Digul Survey . Hughes, Jock (2009) ·