APA
Bedi D.S, . (1991). Strength of materials. : N Delhi S Chand comp.
Chicago
Bedi D.S, . 1991. Strength of materials. : N Delhi S Chand comp.
Harvard
Bedi D.S, . (1991). Strength of materials. : N Delhi S Chand comp.
MLA
Bedi D.S, . Strength of materials. : N Delhi S Chand comp. 1991.