@book { UnitedStatesArmySpecialForces19521974,
    title = "United States Army Special Forces 1952-1974",
    author = "Klaus {Buschmann}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1070397"
}