Parkin, K. (1994). Anthology of British tongue-twisters. S. French.
Lua i Stíl Chicago (17ú heag.)Parkin, Ken. Anthology of British Tongue-twisters. London: S. French, 1994.
Lua MLA (9ú heag.)Parkin, Ken. Anthology of British Tongue-twisters. S. French, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.