एपीए उद्धरण

Petrella, R. (2001). water manifesto: Arguments for a world water contract. Zed Books.

शिकागो स्टाइल उद्धरण

Petrella, Riccardo. Water Manifesto: Arguments for a World Water Contract. London: Zed Books, 2001.

एमएलए उद्धरण

Petrella, Riccardo. Water Manifesto: Arguments for a World Water Contract. Zed Books, 2001.