@book { LeitfdeninderMissionarslinguistik,
    title = "Leitfäden in der Missionarslinguistik",
    author = "Sandra {Breitenbach}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1097027"
}