DJVU PDF Jenner, P.N. 1991, "The form /syan/ in Angkorian Khmer", in Austroasiatic Languages, Essays in honour of H. L. Shorto, ed. J.H.C.S. Davidson, pp. 227-240. School of Oriental and African Studies, University of London. cite.

DJVU Luce, G.H. undated, "Comparative lexicon: PreAngkorianKhmer - AngkorianKhmer", in Luce Collection, MS 6574-7, pp. 008a-009b. National Library of Australia. cite.