Lewis, M. Paul (ed.), 2009. "Samoan (页面存档备份,存于互联网档案馆)". Ethnologue: Languages of the World, Sixteenth edition. Dallas, Tex.: SIL International.
glottolog.org
Hammarström, Harald; Forkel, Robert; Haspelmath, Martin; Bank, Sebastian (编). Samoan. Glottolog 2.7. Jena: Max Planck Institute for the Science of Human History. 2016.