APA
Baker A., . (2006). Tree or three : an elementary pronounciation course. New York: Cambridge Univerity Press.
Chicago
Baker Ann, . 2006. Tree or three : an elementary pronounciation course. New York: Cambridge Univerity Press.
Harvard
Baker A., . (2006). Tree or three : an elementary pronounciation course. New York: Cambridge Univerity Press.
MLA
Baker Ann, . Tree or three : an elementary pronounciation course. New York: Cambridge Univerity Press. 2006.