Botha, R. P. (2016). Language evolution: The Windows approach. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Botha, Rudolf P. Language Evolution: The Windows Approach. Cambridge: Cambridge University Press, 2016.
Lua MLA (9ú heag.)Botha, Rudolf P. Language Evolution: The Windows Approach. Cambridge University Press, 2016.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.