एपीए उद्धरण

Allen, R. Bulletproof Feathers: How Science Uses Nature's Secrets to Design Cutting-Edge Technology.

शिकागो स्टाइल उद्धरण

Allen, Robert. Bulletproof Feathers: How Science Uses Nature's Secrets to Design Cutting-Edge Technology.

एमएलए उद्धरण

Allen, Robert. Bulletproof Feathers: How Science Uses Nature's Secrets to Design Cutting-Edge Technology.