एपीए उद्धरण

Roberts, B. (1993). Biological weapons: Weapons of the future? 1993. Centre for strategic and International Studies.

शिकागो स्टाइल उद्धरण

Roberts, Brad. Biological Weapons: Weapons of the Future? 1993. Washington: Centre for strategic and International Studies, 1993.

एमएलए उद्धरण

Roberts, Brad. Biological Weapons: Weapons of the Future? 1993. Centre for strategic and International Studies, 1993.