एपीए उद्धरण

Ash, R. (2007). Whitaker's World of facts. Penguin Books India.

शिकागो स्टाइल उद्धरण

Ash, Russell. Whitaker's World of Facts. New Delhi: Penguin Books India, 2007.

एमएलए उद्धरण

Ash, Russell. Whitaker's World of Facts. Penguin Books India, 2007.