@book { AnAmericanWitnessinNaziFrankfurt,
    title = "An American Witness in Nazi Frankfurt",
    author = "Andrew {Bonnell}",
    year = "2011",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    doi = "10.3726/978-3-0351-0179-9",
    url = "https://www.peterlang.com/document/1052208"
}