@book { Umweltethik,
    title = "Umweltethik",
    subtitle = "Eine Einführung für Lehrende und Studierende",
    author = "Rainer {Paslack} and Kees {Vromans} and Gamze {Yücel Isildar}",
    year = "2010",
    publisher = "Meidenbauer",
    address = ", Germany",
    url = "https://www.peterlang.com/document/1136433"
}