Gayford, M. L. (1994). Microphone engineering handbook. Focal Press.
Lua i Stíl Chicago (17ú heag.)Gayford, M. L. Microphone Engineering Handbook. Oxford: Focal Press, 1994.
Lua MLA (9ú heag.)Gayford, M. L. Microphone Engineering Handbook. Focal Press, 1994.
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