APA (7th ed.) Citation

Gilbert, J. B. (1993). Clear speech: Pronunciation and listening comprehension in North American English (2nd edición.). Cambridge university press.

Chicago Style (17th ed.) Citation

Gilbert, Judy Bogen. Clear Speech: Pronunciation and Listening Comprehension in North American English. 2nd edición. Estados Unidos de América: Cambridge university press, 1993.

MLA (9th ed.) Citation

Gilbert, Judy Bogen. Clear Speech: Pronunciation and Listening Comprehension in North American English. 2nd edición. Cambridge university press, 1993.