@book{Kopp+2019,
url = {https://doi.org/10.3790/9783428427840},
title = {Hypothesenformulierung in der Absatzforschung},
title = {Wie werden Annahmen über das Käuferverhalten erarbeitet?},
author = {Michael Kopp},
publisher = {Duncker & Humblot},
address = {},
doi = {doi:10.3790/9783428427840},
isbn = {9783428427840},
year = {1972},
lastchecked = {2019}
}