Manterfield, R. J. (1999). Telecommunications signalling. Institution of Electrical Engineers.
Lua i Stíl Chicago (17ú heag.)Manterfield, Richard J. Telecommunications Signalling. London: Institution of Electrical Engineers, 1999.
Lua MLA (8ú heag.)Manterfield, Richard J. Telecommunications Signalling. Institution of Electrical Engineers, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.