एपीए उद्धरण

Nagpal, G. (1994). Tool engineering and design. Khanna publishers.

शिकागो स्टाइल उद्धरण

Nagpal, G.R. Tool Engineering and Design. Delhi: Khanna publishers, 1994.

एमएलए उद्धरण

Nagpal, G.R. Tool Engineering and Design. Khanna publishers, 1994.