Endangered Languages Catalogue Project. Compiled By Research Teams At University of Hawai'i Mānoa and Eastern Michigan University . (2015) ·

Glottolog 2.3 . Hammarström, Harald & Forkel, Robert & Haspelmath, Martin & Nordhoff, Sebastian (2014) · http://glottolog.org

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

Fasu grammar ( pp. 17-33 ) . Loeweke, Eunice and May, Jean (1966) · Anthropological Linguistics . 8

General grammar of Fasu (Namo Me) ( pp. 5-106 ) . Loeweke, Eunice and May, Jean (1980) · In Grammatical studies in Fasu and Mt. Koiali edited by Don Hutchisson · Summer Institute of Linguistics