Compendium of the world's languages

MLA

Campbell, George L. Compendium of the World's Languages. London ; New York: Routledge, 1991.

APA

Campbell, G. L. (1991). Compendium of the world's languages. London ; New York: Routledge.

Chicago

Campbell, George L. Compendium of the World's Languages. London ; New York: Routledge,, 1991.