Lewis 2009

Lewis, Paul M. 2009. Ethnologue: Languages of the World. In Lewis, Paul M. (ed.) 16th edn. Dallas: SIL International. 1248pp. (16th ed.)

https://www.ethnologue.com

@book{Lewis-2009,
  address   = {Dallas},
  author    = {Lewis, Paul M.},
  edition   = {16},
  editor    = {Lewis, Paul M.},
  note      = {16th ed.},
  pages     = {1248},
  publisher = {SIL International},
  title     = {Ethnologue: Languages of the World},
  url       = {https://www.ethnologue.com},
  year      = {2009}
}