Cita APA (7th ed.)

(1987). Protective relays: Application guide (3a. ed.). GEC Measurements.

Cita Chicago (17th ed.)

Protective Relays: Application Guide. 3a. ed. Londres: GEC Measurements, 1987.

Cita MLA (9th ed.)

Protective Relays: Application Guide. 3a. ed. GEC Measurements, 1987.