Rees, N. (1995). The Guinness dictionary of jokes. Guinness Publishing.
Lua i Stíl Chicago (17ú heag.)Rees, Nigel. The Guinness Dictionary of Jokes. Enfield: Guinness Publishing, 1995.
Lua MLA (8ú heag.)Rees, Nigel. The Guinness Dictionary of Jokes. Guinness Publishing, 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.