Ethnologue adds Malol to Siau.
The Siau family is spoken in Sandaun Province. The Kairiru linkage is spoken in East Sepik Province. The Manam linkage is spoken in Madang Province and Wewak Islands Rural LLG of East Sepik Province.2
Lynch, John; Malcolm Ross; Terry Crowley (2002). The Oceanic languages. Richmond, Surrey: Curzon. ISBN 978-0-7007-1128-4. OCLC 48929366. 978-0-7007-1128-4 ↩
Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, eds. (2019). "Glottolog". 3.4. Jena: Max Planck Institute for the Science of Human History. https://glottolog.org ↩