@book{Koestner, author = {K{\"o}stner, Hariet}, title = {Empirische Forschung in den Wirtschafts- und Sozialwissenschaften klipp \& klar}, editor = {Schuster, Peter and Hochschule Schmalkalden,}, publisher = {Springer Gabler}, address = {Wiesbaden}, isbn = {9783658385989}, doi = {10.1007/978-3-658-38599-6}, language = {de} }