@book{GrunwaldSchwill2019, author = {Guido Grunwald and J{\"u}rgen Schwill}, title = {Toolbox Marketing : Praxiserprobte Werkzeuge f{\"u}r die gelungene Marketingarbeit}, publisher = {Sch{\"a}ffer-Poeschel}, address = {Stuttgart}, isbn = {978-3-7910-4344-9}, pages = {215}, year = {2019}, language = {de} }