APA
Ramarutham s & Narayan R, . (1997). strrength of materials. : Delhi Dhanpat Rai & sons.
Chicago
Ramarutham s & Narayan R, . 1997. strrength of materials. : Delhi Dhanpat Rai & sons.
Harvard
Ramarutham s & Narayan R, . (1997). strrength of materials. : Delhi Dhanpat Rai & sons.
MLA
Ramarutham s & Narayan R, . strrength of materials. : Delhi Dhanpat Rai & sons. 1997.