Gaya APA

GILBERT, J, B. (2005). CLEAR SPEECH: Pronunciation and Listening Comprehension in North American English / Judy B. Gilbert (Third Edition). Cambridge: Cambridge at the University Press.

Gaya MLA

GILBERT, Judy, B.. "CLEAR SPEECH: Pronunciation and Listening Comprehension in North American English / Judy B. Gilbert". Third Edition Cambridge: Cambridge at the University Press, 2005. Text.