Cita APA (7th ed.)
ebrary, Inc, Botha, R. P., & Knight, C. (2009). The cradle of language. Oxford University Press.
Cita Chicago (17th ed.)
ebrary, Inc, Rudolf P. Botha, i Chris Knight. The Cradle of Language. Oxford: Oxford University Press, 2009.
Cita MLA (9th ed.)
ebrary, Inc, et al. The Cradle of Language. Oxford University Press, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.