APA引文

Middleton, N., Weston, S., & Downes, J. (1989). Atlas of environmental issues. Facts on File.

Chicago Style (17th ed.) Citation

Middleton, Nick, Steve Weston, and John Downes. Atlas of Environmental Issues. New York: Facts on File, 1989.

MLA引文

Middleton, Nick, et al. Atlas of Environmental Issues. Facts on File, 1989.