Citazione Stile APA (7a Edizione)

GILBERT, J. B. (1984). Clear speech: Pronunciation and listening comprehensionin American English. Cambridge University Press.

Citazione stile Chigago Style (17a edizione)

GILBERT, Judy B. Clear Speech: Pronunciation and Listening Comprehensionin American English. Cambridge: Cambridge University Press, 1984.

Citatione MLA (9a ed.)

GILBERT, Judy B. Clear Speech: Pronunciation and Listening Comprehensionin American English. Cambridge University Press, 1984.