Sigafoos, R. A. (1955). The municipal income tax: Its history and problems. Public Administration Service.
芝加哥风格引文Sigafoos, Robert Alan. The Municipal Income Tax: Its History and Problems. Chicago: Public Administration Service, 1955.
MLA引文Sigafoos, Robert Alan. The Municipal Income Tax: Its History and Problems. Public Administration Service, 1955.
警告：这些引文格式不一定是100％准确.