@book{KalkaMaessen2009, author = {Kalka, Regine and M{\"a}ßen, Andrea}, title = {Marketing: mit Info zum Online-Marketing}, series = {Taschenguide}, journal = {Taschenguide}, publisher = {Haufe}, address = {Freiburg im Breisgau}, isbn = {978-3-448-10043-3}, pages = {128}, year = {2009}, language = {de} } @book{KalkaMaessen2003, author = {Kalka, Regine and M{\"a}ßen, Andrea}, title = {Marketing kl{\´i}č k rozhodov{\´a}n{\´i}, co prod{\´a}vat, komu a jak}, publisher = {Grada Publ}, address = {Praha}, isbn = {978-80-247-0413-5}, year = {2003}, language = {de} } @book{KalkaMaessen2000, author = {Kalka, Regine and M{\"a}ßen, Andrea}, title = {Richtig werben}, series = {STS-TaschenGuide}, journal = {STS-TaschenGuide}, publisher = {Haufe}, address = {Freiburg im Breisgau}, isbn = {978-3-86027-261-9}, pages = {128}, year = {2000}, language = {de} }