Tohutoro APA (7th ed.)
Duggal, S. K. (2000). Design of steel structures (2nd ed.). Tata McGraw-Hill.
Tohutoru Kātū Chicago (17th ed.)
Duggal, S. K. Design of Steel Structures. 2nd ed. New Delhi: Tata McGraw-Hill, 2000.
Tohutoro MLA (9th ed.)
Duggal, S. K. Design of Steel Structures. 2nd ed. Tata McGraw-Hill, 2000.
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