CHOPRA, U. (1994). Basic Fact On Civil Engineering U.b. Chopra. Mubaruk & Bros.
Lua i Stíl Chicago (17ú heag.)CHOPRA, U.B. Basic Fact On Civil Engineering U.b. Chopra. Mubaruk & Bros, 1994.
Lua MLA (8ú heag.)CHOPRA, U.B. Basic Fact On Civil Engineering U.b. Chopra. Mubaruk & Bros, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.