APA (7th ed.) Citation

Campbell, G. L., & King, G. (2011). The concise compendium of the world's languages (2nd ed.). Routledge.

Chicago Style (17th ed.) Citation

Campbell, George L., and Gareth King. The Concise Compendium of the World's Languages. 2nd ed. Milton Park, Abingdon ; New York: Routledge, 2011.

MLA (9th ed.) Citation

Campbell, George L., and Gareth King. The Concise Compendium of the World's Languages. 2nd ed. Routledge, 2011.