APA
Duggal S. K., . (2015). Limit State Design of Steel Structures. New Delhi: McGraw Hill.
Chicago
Duggal S K, . 2015. Limit State Design of Steel Structures. New Delhi: McGraw Hill.
Harvard
Duggal S. K., . (2015). Limit State Design of Steel Structures. New Delhi: McGraw Hill.
MLA
Duggal S K, . Limit State Design of Steel Structures. New Delhi: McGraw Hill. 2015.