Rao S.S. (1986). Switchgear & Protection. Khanna . Pub.
Lua i Stíl Chicago (17ú heag.)Rao S.S. Switchgear & Protection. New Delhi: Khanna . Pub, 1986.
Lua MLA (9ú heag.)Rao S.S. Switchgear & Protection. Khanna . Pub, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.