Não informado. Studies in economics and business. University of Minnesota.
Chicago-Zitierstil (17. Ausg.)Não informado. Studies in Economics and Business. Minneapolis, Minn: University of Minnesota.
MLA-Zitierstil (8. Ausg.)Não informado. Studies in Economics and Business. University of Minnesota.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.