APA (7th ed.) Citation

Gilbert, J. B. (2012). Clear speech: Pronunciation and listening comprehension in North American English (4th edition.). Cambridge University Press.

Chicago Style (17th ed.) Citation

Gilbert, Judy B. Clear Speech: Pronunciation and Listening Comprehension in North American English. 4th edition. Cambridge ; New York: Cambridge University Press, 2012.

MLA (9th ed.) Citation

Gilbert, Judy B. Clear Speech: Pronunciation and Listening Comprehension in North American English. 4th edition. Cambridge University Press, 2012.