Cita APA

Gilbert, J. B., & Gilbert, J. B. (2005). Clear speech: Pronunciation and listening comprehension in North American English (3. edition.). Cambridge: Cambridge University Press.

Citación estilo Chicago

Gilbert, Judy B., y Judy B. Gilbert. Clear Speech: Pronunciation and Listening Comprehension in North American English. 3. edition. Cambridge: Cambridge University Press, 2005.

Cita MLA

Gilbert, Judy B., y Judy B. Gilbert. Clear Speech: Pronunciation and Listening Comprehension in North American English. 3. edition. Cambridge: Cambridge University Press, 2005.