Marks, J. (2007). English pronunciation in use: Elementary (Self-study and classroom use). Cambridge (New York): Cambridge University Press.
Chicago-tyylinen lähdeviittausMarks, Jonathan. English Pronunciation in Use: Elementary (Self-study and Classroom Use). Cambridge (New York): Cambridge University Press, 2007.
MLA-viiteMarks, Jonathan. English Pronunciation in Use: Elementary (Self-study and Classroom Use). Cambridge (New York): Cambridge University Press, 2007.
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