एपीए उद्धरण

Williams, N. (2002). Limited energy systems: A guide to alarm, signaling, remote-control, and communications circuits. Quincy, Mass: NFPA.

शिकागो स्टाइल उद्धरण

Williams, Noel. Limited Energy Systems: A Guide to Alarm, Signaling, Remote-control, and Communications Circuits. Quincy, Mass: NFPA, 2002.

एमएलए उद्धरण

Williams, Noel. Limited Energy Systems: A Guide to Alarm, Signaling, Remote-control, and Communications Circuits. Quincy, Mass: NFPA, 2002.