APA (7th ed.) Zitazioa
Gupta, J. B. (2004). A course in power systems (10th ed.). S.K. Kataria & Sons.
Chicago Style (17th ed.) Zitazioa
Gupta, J. B. A Course in Power Systems. 10th ed. New Delhi: S.K. Kataria & Sons, 2004.
MLA (9th ed.) Zitazioa
Gupta, J. B. A Course in Power Systems. 10th ed. S.K. Kataria & Sons, 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.