APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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