@book { Handelsmanagement,
    title = "Handelsmanagement",
    author = "Bernhard {Swoboda} and Thomas {Foscht} and Hanna {Schramm-Klein}",
    year = "2018",
    publisher = "Vahlen",
    address = "München, Deutschland",
    url = "https://vahlen.openpublishing.com/document/1221020"
}