Schuman, D., & Waterman, B. (1973). A preface to politics. D.C. Heath.
芝加哥风格引文Schuman, David, 与 Bob Waterman. A Preface to Politics. Lexington, Mass: D.C. Heath, 1973.
MLA引文Schuman, David, 与 Bob Waterman. A Preface to Politics. D.C. Heath, 1973.
警告：这些引文格式不一定是100％准确.