APA (7th ed.) Zitazioa
Singh, R. P. (2014). Switchgear and power system protection. PHI.
Chicago Style (17th ed.) Zitazioa
Singh, Ravindra P. Switchgear and Power System Protection. Delhi: PHI, 2014.
MLA (9th ed.) Zitazioa
Singh, Ravindra P. Switchgear and Power System Protection. PHI, 2014.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.