Cita APA (7th ed.)
GEC Alsthom Measurements Limited. (1987). Protective relays application guide (3rd ed.). GEC Alsthom.
Cita Chicago (17th ed.)
GEC Alsthom Measurements Limited. Protective Relays Application Guide. 3rd ed. London: GEC Alsthom, 1987.
Cita MLA (9th ed.)
GEC Alsthom Measurements Limited. Protective Relays Application Guide. 3rd ed. GEC Alsthom, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.