@book { CorporateSocialResponsibilityinderinternationalenTourismuswirtschaft,
    title = "Corporate Social Responsibility in der internationalen Tourismuswirtschaft",
    author = "Christin {Scherer}",
    year = "2009",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836627344",
    url = "https://m.diplom.de/document/226647"
}