APA
Baker A., . (2011). Ship or sheep : an intermediate pronounciation course. 3rd ed. Cambridge Univerity Press: New York.
Chicago
Baker Ann, . 2011. Ship or sheep : an intermediate pronounciation course. 3rd ed. Cambridge Univerity Press: New York.
Harvard
Baker A., . (2011). Ship or sheep : an intermediate pronounciation course. 3rd ed. Cambridge Univerity Press: New York.
MLA
Baker Ann, . Ship or sheep : an intermediate pronounciation course. 3rd ed. Cambridge Univerity Press: New York. 2011.