1. Science Citation Index. Philadelphia: Institute for Scientific Information, Inc.; 1961–1974.
2. ; Social Stratification in Science, Chicago: University of Chicago Press; 1973.
3. Communication in Science. London: Butter-worths; 1974.
4. Networks of Scientific Papers
5. “A Statistical Procedure for Evaluating the Importance of Scientific Papers.” Ph.D. thesis, University of Chicago, 1974.