@book { InterviewersDeviationsinSurveys,
    title = "Interviewers’ Deviations in Surveys",
    author = "Peter {Winker} and Natalja {Menold} and Rolf {Porst}",
    year = "2013",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-02596-5",
    url = "https://www.peterlang.com/document/1047161"
}