1. Thao triplication;Blust;Oceanic Linguistics,2001
2. Reduplication in Micronesian languages;Harrison;Oceanic Linguistics,1973
3. Sifan and Horsok vocabularies;Hodgson;Journal of the Asiatic Society of Bengal,1857
4. Daofu yuyin he dongci bianhua;Huang;Minzu Yuwen,1990