@book { StandardsfrwahreExperten,
    title = "Standards für wahre Experten",
    author = "Sandra {Masemann} and Barbara {Messer} and  {Der Paritätische Oldenburg Ammerland}",
    year = "2011",
    publisher = "Schlütersche Verlagsgesellschaft mbH & Co. KG",
    address = ", Deutschland",
    url = "https://schluetersche.openpublishing.com/document/403573"
}