@book { ManfredGerlachLDPDEinepolitischeBiographie,
    title = "Manfred Gerlach, LDP(D) – Eine politische Biographie",
    author = "David {Bordiehn}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b18976",
    url = "https://www.peterlang.com/document/1151126"
}