DJVU Luce, G.H. undated, "Comparative lexicon: Pwo - Sgaw - Păku - Bwè - Gèba - Kăya - Gèk`o - Yinban - Pă-O", in Luce Collection, MS 6574-7, pp. 011a-049b. National Library of Australia. cite.

DJVU Luce, G.H. undated, "Comparative lexicon "Karen Group": Pwo - Sgaw - W.Bwè - Geda - Pa-O - Péléchi", in Luce Collection, MS 6574-7, pp. 014-024. National Library of Australia. cite.