^Foley, William A. (2018). "The Languages of the Sepik-Ramu Basin and Environs". 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. 197–432. ISBN978-3-11-028642-7.
References
Ross, Malcolm (2005). "Pronouns as a preliminary diagnostic for grouping Papuan languages". In Andrew Pawley; Robert Attenborough; Robin Hide; Jack Golson (eds.). Papuan pasts: cultural, linguistic and biological histories of Papuan-speaking peoples. Canberra: Pacific Linguistics. pp. 15–66. ISBN0858835622. OCLC67292782.