एपीए उद्धरण

Nordstrom,Hakan, & Vaughan,Scatt. (1999). Trade and environment. World Trade Organization.

शिकागो स्टाइल उद्धरण

Nordstrom,Hakan, और Vaughan,Scatt. Trade and Environment. Geneva: World Trade Organization, 1999.

एमएलए उद्धरण

Nordstrom,Hakan, और Vaughan,Scatt. Trade and Environment. World Trade Organization, 1999.