Judy B Gilbert. (2001). Clear speech from the start (3 cassettes in box): Basic pronunciation and listening comprehension in North American English. Cambridge, UK: Cambridge Univ. Press.
Trích dẫn kiểu ChicagoJudy B Gilbert. Clear Speech From the Start (3 Cassettes in Box): Basic Pronunciation and Listening Comprehension in North American English. Cambridge, UK: Cambridge Univ. Press, 2001.
MLA引文Judy B Gilbert. Clear Speech From the Start (3 Cassettes in Box): Basic Pronunciation and Listening Comprehension in North American English. Cambridge, UK: Cambridge Univ. Press, 2001.
警告:這些引文格式不一定是100%准確.