Lee-Smith, Mei W. and Stephen A. Wurm. 1996. "The Wutun Language." In Atlas of Languages of Intercultural Communication in the Pacific, Asia, and the Americas, edited by Stephen A. Wurm et al.. II.2: 883-897. Mouton de Gruyter.
Kumar Nath, Palash. 2008. "Doing Fieldwork On the Singpho Languages of North Eastern India." In North East Indian linguistics, edited by Stephen Morey and Mark Post. 243-254. New Delhi: Foundation Books.