@book { SelfRegulationandLabourStandards,
    title = "Self-Regulation and Labour Standards",
    author = "Carolin {Zeller}",
    year = "2012",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-01331-3",
    url = "https://www.peterlang.com/document/1046098"
}