Barlow, Russell Linguistic and Cultural Evolution, Max Planck Institute for the Science of Human History, Max Planck Society;
https://catalog.paradisec.org.au/collections/RB7 (Any fulltext)
Barlow, R. (2016). Mwakai (aka Mongol) language recordings. Sydney: Pacific and Regional Archive for Digital Sources in Endangered Cultures (PARADISEC), University of Sydney.