↑Ross, Malcolm.Pronouns as a preliminary diagnostic for grouping Papuan languages // Papuan Pasts: Cultural, Linguistic and Biological Histories of Papuan-Speaking Peoples / Edited by Andrew Pawley, Robert Attenborough, Jack Golson and Robin Hide ; Pacific Linguistics, Research School of Pacific and Asian Studies, The Australian National University. — Canberra, 2005. — 817 p. — (Pacific Linguistics 572). — ISBN 0-85883-562-2.
Andrew Pawley, Harald Hammarström. The languages and linguistics of the New Guinea area: a comprehensive guide / Bill Palmer (ed.). — Berlin; Boston: De Gruyter Mouton, 2018. — (The world of linguistics). — ISBN 978-3-11-028642-7.
Bill Palmer.Language families of the New Guinea Area // The languages and linguistics of the New Guinea area: a comprehensive guide. — Berlin; Boston: De Gruyter Mouton, 2018. — (The world of linguistics). — ISBN 978-3-11-028642-7.