the most influential post-war American sociologists. He is sometimes considered the last great "grand theorist" of twentieth century American sociology. While Blau's work in the differentiation of organizations was short-lived, his style of research was not. He provided an exemplar of how to do research and how to build theory. He proved that general and valuable deductive theory was possible in sociology. Blau eventually paved the way for many young sociologists that then used similar styles of research and deductive theory. In addition to that, he, along with the help of Otis Dudley Duncan, introduced multiple regression and path analysis to the sociological audience. These two methods are currently the go-to methods of quantitative sociology. Blau's foundational theories continue to give momentum for development in social science and his ideas are still widely used. Works Dynamics of Bureaucracy (1955) Bureaucracy in Modern Society (1956) "A Theory of Social Integration", The American Journal of Sociology, Vol. LXV, No. 6, p. 545 (1960) A Theory of Social Integration (1960) Formal Organizations: A Comparative Approach, with Richard Scott (1962) Exchange and Power in Social Life (1964) "The Flow of Occupational Supply and Recruitment", American Sociology Review (1965) The American Occupational Structure (1967) A Formal Theory of Differentiation in Organizations (1970) The Organization of Academic Work (1973) "Presidential Address: Parameters of Social Structure", American Sociology Review (1974) On the Nature of Organizations (1974) Approaches to the Study of Social Structure, (editor). New York: The Free Press A Division of Macmillan Publishing Co., Inc. (1975) Inequality and Heterogeneity: A Primitive Theory of Social Structure (1977) Crosscutting Social Circles: Testing a Macrostructural Theory of Intergroup Relations, with Joseph E. Schwartz (1984) Structural Contexts of Opportunities (1994) A Circuitous Path to Macrostructural Theory (1995) References Ritzer, George. Sociological Theory. Seventh Edition. 1. New York: The Mc-Graw Hill Companies, Inc., 2008. Print. Ritzer, George. "Sociological Theory". Eighth Edition. 1. New York: The McGraw Hill Companies, Inc., 2011. Print. Blau, Peter. "Exchange and Power in Social Life". 1st edition. 1. New York: John Wiley and Sons, Inc, 1964. Print. Blau, Peter. Inequality and Heterogeneity. 1st edition. 1. New York: The Free Press, 1977. Print. Scott, Richard and Calhoun, Craig. "Peter Michael Blau". Bibliographic Memoirs. The National Academies Press, Web. 16 Oct 2009. nap.edu Allan, Kenneth. "Contemporary Social and Sociological Theory: Visualizing Social Worlds". 1st edition. 1. Thousand Oaks: Pine Forge Press. 2006. Print. Farganis, James. "Readings in Social Theory: