Gaya APA

Gilbert, J, B. (2008). Clear speech : pronunciation and listening comprehension in north American English (3 rd Ed.). New York: Effendiharahap Publishing Coy.

Gaya MLA

Gilbert, Judy, B.. "Clear speech : pronunciation and listening comprehension in north American English". 3 rd Ed. New York: Effendiharahap Publishing Coy, 2008. Text.