RAJU, N. (1981). Prestressed Concrete. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)RAJU, N.krishna. Prestressed Concrete. McGraw-Hill, 1981.
Lua MLA (8ú heag.)RAJU, N.krishna. Prestressed Concrete. McGraw-Hill, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.