@book{NagelMieke2017, author = {Nagel, Michael and Mieke, Christian}, title = {Marketing und Vertrieb}, edition = {2., bearbeitete Auflage}, publisher = {UVK Verlagsgesellschaft mbH}, address = {Konstanz ; M{\"u}nchen}, isbn = {978-3-86764-749-6}, pages = {154}, year = {2017}, subject = {Sales-promotion}, language = {de} } @book{NagelMieke2014, author = {Nagel, Michael and Mieke, Christian}, title = {Marketing- und Vertriebsmethoden}, edition = {1. Aufl.}, publisher = {UVK-Verlagsges.}, address = {Konstanz ; M{\"u}nchen}, isbn = {978-3-86764-569-0}, pages = {114}, year = {2014}, subject = {Sales-promotion}, language = {de} }