APA
Duggal S., . (2016). Design of Steel Structures. : N.Delhi,McGraw Hill.
Chicago
Duggal S.K, . 2016. Design of Steel Structures. : N.Delhi,McGraw Hill.
Harvard
Duggal S., . (2016). Design of Steel Structures. : N.Delhi,McGraw Hill.
MLA
Duggal S.K, . Design of Steel Structures. : N.Delhi,McGraw Hill. 2016.