Ball, M. J. (1999). Phonetics: The science of speech. Arnold.
Cita Chicago (17th ed.)Ball, Martin J. Phonetics: The Science of Speech. London: Arnold, 1999.
Cita MLA (9th ed.)Ball, Martin J. Phonetics: The Science of Speech. Arnold, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.