APA
Negi L. S., . (2008). Strength of materials. New Delhi: Tata McGraw Hill Education.
Chicago
Negi L S, . 2008. Strength of materials. New Delhi: Tata McGraw Hill Education.
Harvard
Negi L. S., . (2008). Strength of materials. New Delhi: Tata McGraw Hill Education.
MLA
Negi L S, . Strength of materials. New Delhi: Tata McGraw Hill Education. 2008.