एपीए उद्धरण

Helszain, J. (1989). Ferrite phase shifters and control devices. McGraw-Hill.

शिकागो स्टाइल उद्धरण

Helszain, Joseph. Ferrite Phase Shifters and Control Devices. London: McGraw-Hill, 1989.

एमएलए उद्धरण

Helszain, Joseph. Ferrite Phase Shifters and Control Devices. McGraw-Hill, 1989.