APA引文

World Wildlife Fund (U.S.) & Beacham, W. (1997). World Wildlife Fund guide to extinct species of modern times. Beacham Pub..

Chicago Style (17th ed.) Citation

World Wildlife Fund (U.S.) and Walton Beacham. World Wildlife Fund Guide to Extinct Species of Modern Times. Osprey, FL: Beacham Pub., 1997.

MLA引文

World Wildlife Fund (U.S.) and Walton Beacham. World Wildlife Fund Guide to Extinct Species of Modern Times. Beacham Pub., 1997.

警告：這些引文格式不一定是100％准確.