Lua APA (7ú heag.)
Duggal, S. K. (2000). Design of steel structures (2nd ed.). Tata McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)
Duggal, S. K. Design of Steel Structures. 2nd ed. New Delhi: Tata McGraw-Hill, 2000.
Lua MLA (9ú heag.)
Duggal, S. K. Design of Steel Structures. 2nd ed. Tata McGraw-Hill, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.