Carr, G. F., & Rauch, I. (1983). Language Change. Indiana University Press.
Lua i Stíl Chicago (17ú heag.)Carr, Gerald F., agus Irmengard Rauch. Language Change. Bloomington: Indiana University Press, 1983.
Lua MLA (9ú heag.)Carr, Gerald F., agus Irmengard Rauch. Language Change. Indiana University Press, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.