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-Zitierstil (17. Ausg.)Harder, 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-Zitierstil (9. Ausg.)Harder, Theodor. Introduction to Mathematical Models in Market and Opinion Research: With Practical Applications, Computing Procedures, and Estimates of Computing Requirements. Gordon & Breach, 1969.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.