Durning, A. T., Chege, N., & Douglas, C. (1993). Saving the forests: What will it taken. Worldwatch Institute.
芝加哥风格引文Durning, Alan Thein, Nancy Chege, 与 Carole Douglas. Saving the Forests: What Will It Taken. Washington, DC: Worldwatch Institute, 1993.
MLA引文Durning, Alan Thein, et al. Saving the Forests: What Will It Taken. Worldwatch Institute, 1993.
警告：这些引文格式不一定是100％准确.