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Dano at Ethnologue (18th ed., 2015) (subscription required)
Strange, David (April 1992). Upper Asaro (Dano) Language . Organised Phonology Data: SIL.
Strange, David (1973). Indicative and Subjunctive in Upper Asaro. Linguistics, Vol. 11, No. 110: De Gruyter, Mouton. pp. 82–97.{{cite book}}: CS1 maint: location (link)