@book { SpiritualGuidanceonMountAthos,
    title = "Spiritual Guidance on Mount Athos",
    author = "Graham {Speake} and Metropolitan Kallistos {Ware}",
    year = "2023",
    publisher = "Peter Lang Verlag",
    address = "Oxford, United Kingdom",
    doi = "10.3726/b20891",
    url = "https://www.peterlang.com/document/1340765"
}