Jelaskan Rujukan dari Bahasa Sigulai dalam bahasa melayu

Adelaar, Alexander, The Austronesian Languages of Asia and Madagascar: A Historical Perspective, The Austronesian Languages of Asia and Madagascar, pp. 1-42, Routledge Language Family Series, London, Routledge, 2005,

Nothofer, Bernd, The Barrier Island Languages in the Austronesian Language Family, Focal II: Papers From the Fourth International Conference on Austronesian Linguistics, pp. 87-109, Pacific Linguistics, Series C 94, Canberra, Research School of Pacific and Asian Studies, The Australian National University, 1986.