Willerding, M. F. (1966). Elementary mathematics: Its structure and concepts. Wiley.
芝加哥风格引文Willerding, Margaret F. Elementary Mathematics: Its Structure and Concepts. New York: Wiley, 1966.
MLA引文Willerding, Margaret F. Elementary Mathematics: Its Structure and Concepts. Wiley, 1966.
警告：这些引文格式不一定是100％准确.