@book { AufbruchinsHeiligeLandDieLogistikdesErstenKreuzzugs,
    title = "Aufbruch ins Heilige Land: Die Logistik des Ersten Kreuzzugs",
    author = "Julian {Hatzig}",
    year = "2015",
    publisher = "BACHELOR + MASTER PUBLISHING",
    address = "Hamburg, Deutschland",
    url = "https://m.bachelor-master-publishing.de/document/297388"
}