APA (7th ed.) Zitazioa
Ram , B., & Vishwakarma , D. N. (2011). Power system protection and switchgear (2nd ed.). Tata McGraw Hill.
Chicago Style (17th ed.) Zitazioa
Ram , Badri, eta D N. Vishwakarma. Power System Protection and Switchgear. 2nd ed. New Delhi: Tata McGraw Hill, 2011.
MLA (9th ed.) Zitazioa
Ram , Badri, eta D N. Vishwakarma. Power System Protection and Switchgear. 2nd ed. Tata McGraw Hill, 2011.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.