Bies, D. A., & Hansen, C. H. (1988). Engineering noise control: Theory and practice. Unwin Hyman.
Lua i Stíl Chicago (17ú heag.)Bies, David Alan, agus Colin Henry Hansen. Engineering Noise Control: Theory and Practice. Londres: Unwin Hyman, 1988.
Lua MLA (9ú heag.)Bies, David Alan, agus Colin Henry Hansen. Engineering Noise Control: Theory and Practice. Unwin Hyman, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.