Gaya APA

Anderson, K., Blackhurst, R. (1993). Regional integration and global trading system (1st. Pub 1993). New York: Harvester Wheatshef.

Gaya MLA

Anderson, Kym., Blackhurst, Richard. "Regional integration and global trading system". 1st. Pub 1993 New York: Harvester Wheatshef, 1993. Text.