@book { ThePrincipleofSubsidiarityinCatholicSocialThought,
    title = "The Principle of Subsidiarity in Catholic Social Thought",
    author = "Simeon Tsetim {Iber}",
    year = "2012",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    doi = "10.3726/978-1-4539-0978-2",
    url = "https://www.peterlang.com/document/1050992"
}