@book { TheDonghakConceptofGodHeaven,
    title = "The Donghak Concept of God/Heaven",
    author = " {Kiyul Chung}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    url = "https://www.peterlang.com/document/1104023"
}