Personal Communication . Don Daniels (2014) ·

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

A Preliminary Phonological History of the Sogeram Languages of Papua New Guinea ( pp. 163-193 ) . Don R. Daniels (2010) · Oceanic Linguistics. 49 (1) ·

Sirva grammar sketch ( pp. 658-765 ) . Don R. Daniels (2015) · In A Reconstruction of Proto-Sogeram: Phonology, Lexicon, and Morphosyntax http://adrlprod21.library.ucsb.edu/downloads/70795789x