APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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