एपीए उद्धरण

Gopi, S. (2009). Basic civil engineering. Pearson.

शिकागो स्टाइल उद्धरण

Gopi, Satheesh. Basic Civil Engineering. Pearson, 2009.

एमएलए उद्धरण

Gopi, Satheesh. Basic Civil Engineering. Pearson, 2009.