Ratliff, Martha. 2010. Hmong-Mien language history. Canberra: Pacific Linguistics.
@book{jacquesestimative-ratliff10protohm,
address = {Canberra},
author = {Ratliff, Martha},
publisher = {Pacific Linguistics},
title = {Hmong-Mien language history},
year = {2010}
}