Grava, S. (1969). Urban planning aspects of water pollution control. Columbia University Press.
芝加哥风格引文Grava, Sigurd. Urban Planning Aspects of Water Pollution Control. New York: Columbia University Press, 1969.
MLA引文Grava, Sigurd. Urban Planning Aspects of Water Pollution Control. Columbia University Press, 1969.
警告：这些引文格式不一定是100％准确.