APA aipamena

Gilbert, J. B. (2005). Clear speech: Pronunciation and Listening Comprehension in North American English (Tercera Edición.). Cambridge University Press.

Chicago Style aipamena

Gilbert, Judy B. Clear Speech: Pronunciation and Listening Comprehension in North American English. Tercera Edición. Cambridge: Cambridge University Press, 2005.

MLA aipamena

Gilbert, Judy B. Clear Speech: Pronunciation and Listening Comprehension in North American English. Tercera Edición. Cambridge University Press, 2005.