Williams, C. H. (1978). Language decline and nationalist resurgence in Wales.
Lua i Stíl Chicago (17ú heag.)Williams, Colin H. Language Decline and Nationalist Resurgence in Wales. 1978.
Lua MLA (8ú heag.)Williams, Colin H. Language Decline and Nationalist Resurgence in Wales. 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.