Indiacode.nic.in (ed.). "Seventh Amendment". Arquivado dende o orixinal o 01 de maio de 2017. Consultado o 19 de novembro de 2011.
indianexpress.com
The Indian Express.( This is the number of approximate emigrants from Kerala, which is closely related to, but different from the actual number of Malayalis.) (ed.). "Kerala Migration Survey - 2014" (17 de setembro de 2014). Consultado o 21 de outubro de 2014.
ne.se
Mikael Parkvall, "Världens 100 största språk 2007" (The World's 100 Largest Languages in 2007), in Nationalencyklopedin. Asterisks mark the 2010 estimates for the top dozen languages.