Harder, T. (1969). Introduction to mathematical models in market and opinion research: With practical applications, computing procedures, and estimates of computing requirements. Gordon & Breach.
Chicago Style (17th ed.) CitationHarder, Theodor. Introduction to Mathematical Models in Market and Opinion Research: With Practical Applications, Computing Procedures, and Estimates of Computing Requirements. New York: Gordon & Breach, 1969.
MLA (9th ed.) CitationHarder, Theodor. Introduction to Mathematical Models in Market and Opinion Research: With Practical Applications, Computing Procedures, and Estimates of Computing Requirements. Gordon & Breach, 1969.
Warning: These citations may not always be 100% accurate.