12Palmer, Bill (2018). The Languages and Linguistics of the New Guinea Area: A Comprehensive Guide. Berlin: De Gruyter Mouton. p.665.{{cite book}}: CS1 maint: publisher location (link)
↑Foley, William A. (2018). "The morphosyntactic typology of Papuan languages". In Palmer, Bill (ed.). The Languages and Linguistics of the New Guinea Area: A Comprehensive Guide. The World of Linguistics. Vol.4. Berlin: De Gruyter Mouton. pp.895–938. ISBN978-3-11-028642-7.