Não informado. (2017). Advertising Age's Business Marketing. Crain Communications.
Chicago-referens (17:e uppl.)Não informado. Advertising Age's Business Marketing. Chicago, Ill: Crain Communications, 2017.
MLA-referens (8:e uppl.)Não informado. Advertising Age's Business Marketing. Crain Communications, 2017.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.