Cita APA (7a ed.)

McMahon, A. M. S., & McMahon, R. (2005). Language classification by numbers. Oxford University Press.

Cita Chicago Style (17a ed.)

McMahon, April M. S., y Robert McMahon. Language Classification by Numbers. Oxford ; New York: Oxford University Press, 2005.

Cita MLA (9a ed.)

McMahon, April M. S., y Robert McMahon. Language Classification by Numbers. Oxford University Press, 2005.