Zachariah, K. C. & Rajan, S. Irudaya (2011), Kerala Migration Survey 2011Archived 2020-01-10 at the Wayback Machine (PDF), Department of Non-resident Keralite Affairs, Government of Kerala, p. 29. This is the number of emigrants from Kerala, which is closely related to but different from the actual number of Malayalis.
"Kerala Migration Survey - 2014". 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.). No. 17 September 2014. Retrieved 21 October 2014.
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.
Zachariah, K. C. & Rajan, S. Irudaya (2011), Kerala Migration Survey 2011Archived 2020-01-10 at the Wayback Machine (PDF), Department of Non-resident Keralite Affairs, Government of Kerala, p. 29. This is the number of emigrants from Kerala, which is closely related to but different from the actual number of Malayalis.