Gilbert, J. B. (2005). Clear speech: Pronunciation and listening comprehension in North American english (3rd ed.). Cambridge University.
Lua i Stíl Chicago (17ú heag.)Gilbert, Judy B. Clear Speech: Pronunciation and Listening Comprehension in North American English. 3rd ed. Cambridge: Cambridge University, 2005.
Lua MLA (9ú heag.)Gilbert, Judy B. Clear Speech: Pronunciation and Listening Comprehension in North American English. 3rd ed. Cambridge University, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.