Robert Blust (2013). The Austronesian languages. Asia-Pacific Linguistics, School of Culture, History and Language, College of Asia and the Pacific, The Australian National University. hdl:1885/10191. ISBN9781922185075.
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Ergebnisse der Südsee-Expedition, 1908-1910. Hamburg: L. Friederichsen. 1914. pp. 31, 51. OCLC13389966.