एपीए उद्धरण

Venkatappa Rao, G. Principles of transportation and highway engineering. Tata McGraw-Hill.

शिकागो स्टाइल उद्धरण

Venkatappa Rao, G. Principles of Transportation and Highway Engineering. New Delhi: Tata McGraw-Hill.

एमएलए उद्धरण

Venkatappa Rao, G. Principles of Transportation and Highway Engineering. Tata McGraw-Hill.