APA引文

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

Chicago Edition Citation

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

MLA引文

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

警告：这些引文格式不一定是100％准确.