Palen, J. J. (1981). City scenes: Problems and prospects (Second edition.). Little, Brown.
芝加哥风格引文Palen, J. John. City Scenes: Problems and Prospects. Second edition. Boston: Little, Brown, 1981.
MLA引文Palen, J. John. City Scenes: Problems and Prospects. Second edition. Little, Brown, 1981.
警告：这些引文格式不一定是100％准确.