APA (7th ed.) Citation

Campbell, G. L., & King, G. (1991). Compendium of the world's languages (1. publ.). Routledge.

Chicago Style (17th ed.) Citation

Campbell, George L., and Gareth King. Compendium of the World's Languages. 1. publ. London [u.a.]: Routledge, 1991.

MLA (9th ed.) Citation

Campbell, George L., and Gareth King. Compendium of the World's Languages. 1. publ. Routledge, 1991.