@book { DieBalancedScorecardalseinstrategischesManagementsysteminderinternationalenHotellerie,
    title = "Die Balanced Scorecard als ein strategisches Managementsystem in der internationalen Hotellerie",
    author = "Ivonne {Adler}",
    year = "2002",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832452483",
    url = "https://m.diplom.de/document/220196"
}