APA
Gopalakrishna K. R., . (2013). Machine Drawing. Bangalore: Subhas Publishing.
Chicago
Gopalakrishna K R, . 2013. Machine Drawing. Bangalore: Subhas Publishing.
Harvard
Gopalakrishna K. R., . (2013). Machine Drawing. Bangalore: Subhas Publishing.
MLA
Gopalakrishna K R, . Machine Drawing. Bangalore: Subhas Publishing. 2013.