Barnes, C. L. (1898). Practical acoustics. Macmillan and co., limited.
Lua i Stíl Chicago (17ú heag.)Barnes, C. L. Practical Acoustics. London, New York: Macmillan and co., limited, 1898.
Lua MLA (8ú heag.)Barnes, C. L. Practical Acoustics. Macmillan and co., limited, 1898.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.