Childs, T., Good, J. & Mitchell, A.2014. Beyond the ancestral code: Towards a model for sociolinguistic language documentation. Language Documentation and Conservation 8: 168–191.
Dryer, M. S. & Haspelmath, M. (eds). 2013. The World Atlas of Language Structures Online (WALS). Leipzig: Max Planck Institute for Evolutionary Anthropology. <[URL]<
Errington, J.2008. Linguistics in a Colonial World: A Story of Language, Meaning and Power. Oxford: Blackwell.