Silk, A. J. (2001). Intermedia substitutability and market demand by national advertisers. National Bureau of Economic Research.
Chicago-Zitierstil (17. Ausg.)Silk, Alvin J. Intermedia Substitutability and Market Demand by National Advertisers. Cambridge, Mass: National Bureau of Economic Research, 2001.
MLA-Zitierstil (9. Ausg.)Silk, Alvin J. Intermedia Substitutability and Market Demand by National Advertisers. National Bureau of Economic Research, 2001.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.