Não informado. (1930). Advertising Age: International newspaper of marketing. Crain Communications.
Chicago-Zitierstil (17. Ausg.)Não informado. Advertising Age: International Newspaper of Marketing. Chicago, Ill: Crain Communications, 1930.
MLA-Zitierstil (8. Ausg.)Não informado. Advertising Age: International Newspaper of Marketing. Crain Communications, 1930.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.