APA
Kumar N.S, . (2011). Engineering Drawing-7. : Jalandhar city .India Pub. House.
Chicago
Kumar N.S, . 2011. Engineering Drawing-7. : Jalandhar city .India Pub. House.
Harvard
Kumar N.S, . (2011). Engineering Drawing-7. : Jalandhar city .India Pub. House.
MLA
Kumar N.S, . Engineering Drawing-7. : Jalandhar city .India Pub. House. 2011.