Não informado. (2017). Advertising Age's Business Marketing. Crain Communications.
Chicago-Zitierstil (17. Ausg.)Não informado. Advertising Age's Business Marketing. Chicago, Ill: Crain Communications, 2017.
MLA-Zitierstil (8. Ausg.)Não informado. Advertising Age's Business Marketing. Crain Communications, 2017.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.