@book { SpiritualGuidanceonMountAthos,
    title = "Spiritual Guidance on Mount Athos",
    author = "Graham {Speake} and Kallistos {Ware}",
    year = "2015",
    publisher = "Peter Lang Verlag",
    address = "Oxford, United Kingdom",
    doi = "10.3726/978-3-0353-0693-4",
    url = "https://www.peterlang.com/document/1053420"
}