एपीए उद्धरण

Gupta, A. Billion is enough: India's population problem a way out. 2001.

शिकागो स्टाइल उद्धरण

Gupta, Ashok. Billion Is Enough: India's Population Problem a Way Out. New Delhi: 2001.

एमएलए उद्धरण

Gupta, Ashok. Billion Is Enough: India's Population Problem a Way Out. 2001.