एपीए उद्धरण

Brown,Lester R. (1989). State of the world. PHI.

शिकागो स्टाइल उद्धरण

Brown,Lester R. State of the World. New Delhi: PHI, 1989.

एमएलए उद्धरण

Brown,Lester R. State of the World. PHI, 1989.