DJVU PDF Purnell, H.C. 2002, "Steps Toward Standardization of a Minority Orthography: An Update on Mien (Yao)", in Papers from the Tenth Annual Meeting of the Southeast Asian Linguistics Society, ed. M. Macken, pp. 297-316. Arizona State University, Program for Southeast Asian Studies. cite.

DJVU PDF Person, K.R. 2001, "Writing Bisu: a community-based approach to orthography development", in Papers from the Ninth Annual Meeting of the Southeast Asian Linguistics Society, ed. G.W. Thurgood, pp. 171-200. Arizona State University, Program for Southeast Asian Studies. cite.