Cunningham, W. P., & Cunningham, M. A. (2015). Environmental science: A global concern (Thirteenth edition.). McGraw-Hill Education.
芝加哥风格引文Cunningham, William P., 与 Mary Ann Cunningham. Environmental Science: A Global Concern. Thirteenth edition. New York, N.Y: McGraw-Hill Education, 2015.
MLA引文Cunningham, William P., 与 Mary Ann Cunningham. Environmental Science: A Global Concern. Thirteenth edition. McGraw-Hill Education, 2015.
警告：这些引文格式不一定是100％准确.