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) ·

World Oral Literature Project . http://www.oralliterature.org

The status of the least documented language families in the world ( pp. 177-212 ) . Hammarström, Harald (2010) · Language Documentation and Conservation. 4 http://scholarspace.manoa.hawaii.edu/bitstream/handle/10125/4478/hammarstrom.pdf;jsessionid=76414DD90F95DF076959B1AEB0158091?sequence=1

Glottolog . http://www.glottolog.org/glottolog/

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

Draft Survei Sosiolinguistik pada ragam Bahasa Kimki di Bagian Tenggara Gunung Ji, Papua, Indonesia . Benny Rumaropen (2004) ·

Language isolates in the New Guinea region . Harald Hammarström (2017) · In Language isolates edited by Lyle Campbell, Thomas Dougherty, and Alexander D. Smith · London: Routledge