Beer, S. H., & Ulam, A. B. (1973). Patterns of government : the major political systems of Europe / Samuel H. Beer...[et.al] : [edited by] Samuel H. Beer and Adam B. Ulam: The major political systems of Europe (3rd ed.). Random House.
Chicago Style (17th ed.) CitationBeer, Samuel H., and Adam B. Ulam. Patterns of Government : The Major Political Systems of Europe / Samuel H. Beer...[et.al] : [edited by] Samuel H. Beer and Adam B. Ulam: The Major Political Systems of Europe. 3rd ed. New York: Random House, 1973.
MLA (9th ed.) CitationBeer, Samuel H., and Adam B. Ulam. Patterns of Government : The Major Political Systems of Europe / Samuel H. Beer...[et.al] : [edited by] Samuel H. Beer and Adam B. Ulam: The Major Political Systems of Europe. 3rd ed. Random House, 1973.