Borwick, J. (1988). Loudspeaker and headphone handbook. Butterworths.
Lua i Stíl Chicago (17ú heag.)Borwick, John. Loudspeaker and Headphone Handbook. London: Butterworths, 1988.
Lua MLA (9ú heag.)Borwick, John. Loudspeaker and Headphone Handbook. Butterworths, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.