@book { EmpirischeForschungundTheoriebildung,
    title = "Empirische Forschung und Theoriebildung",
    author = "Bernt {Ahrenholz} and Ursula {Bredel} and Wolfgang {Klein} and Martina {Rost-Roth} and Romuald {Skiba}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1104842"
}