@book { DieWerbungalsSprachrohrdesdeutschenSpendenmarktes, title = "Die Werbung als Sprachrohr des deutschen Spendenmarktes", author = "Stefan {Boockmann}", year = "2002", publisher = "Diplom.de", address = "Hamburg, Germany", doi = "10.3239/9783832459123", url = "https://m.diplom.de/document/221365" }