APA (7th ed.) Citation

Gilbert, J. B. (1993). Clear speech: Pronunciation and listening comprehension in North American English. Student's book (2nd ed.). University Press.

Chicago Style (17th ed.) Citation

Gilbert, Judy B. Clear Speech: Pronunciation and Listening Comprehension in North American English. Student's Book. 2nd ed. Cambridge: University Press, 1993.

MLA (9th ed.) Citation

Gilbert, Judy B. Clear Speech: Pronunciation and Listening Comprehension in North American English. Student's Book. 2nd ed. University Press, 1993.