APA (7th ed.) Citation

McMahon, A. M. S., & McMahon, R. (2011). Language classification by numbers (Repr.). Oxford Univ. Press.

Chicago Style (17th ed.) Citation

McMahon, April M. S., and Robert McMahon. Language Classification by Numbers. Repr. Oxford [u.a.]: Oxford Univ. Press, 2011.

MLA (9th ed.) Citation

McMahon, April M. S., and Robert McMahon. Language Classification by Numbers. Repr. Oxford Univ. Press, 2011.

Warning: These citations may not always be 100% accurate.