APA (7th ed.) Citation

Gilbert, J. B. (2005). Clear speech: Pronunciation and listening comprehension in North American english (3rd ed.). Cambridge University.

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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