DJVU PDF Shintani, T. 2003, "Notes à propos de l'étymologie du mot karen", in Linguistics of the Tibeto-Burman Area, vol. 26, no. 1, pp. 15-21. cite.

DJVU PDF Benedict, P.K. 1981, "A further (unexpurgated) note on Karen genital flipflop", in Linguistics of the Tibeto-Burman Area, vol. 6, no. 1, pp. 103-103. cite.

DJVU PDF Benedict, P.K. 1979, "Four forays into Karen linguistic history", in Linguistics of the Tibeto-Burman Area, vol. 5, no. 1, pp. 1-35. cite.