@book{Pepels+2015,
url = {https://doi.org/10.3790/9783428547944},
title = {Einführung in die Marktforschung},
title = {},
author = {Werner Pepels},
publisher = {Duncker & Humblot},
address = {},
doi = {doi:10.3790/9783428547944},
isbn = {9783428547944},
year = {2015},
lastchecked = {2015}
}