NAGPAL, G. Power plant engineering.-- Ed.8. Khanna Pub.; 1985.
Lua i Stíl Chicago (17ú heag.)NAGPAL, G.R. Power Plant Engineering.-- Ed.8. Delhi: Khanna Pub.; 1985.
Lua MLA (9ú heag.)NAGPAL, G.R. Power Plant Engineering.-- Ed.8. Khanna Pub.; 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.