@book { AlchemyoftheSoul,
    title = "Alchemy of the Soul",
    author = "Joyce {Piert}",
    year = "2014",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    doi = "10.3726/978-1-4539-1561-5",
    url = "https://www.peterlang.com/document/1051572"
}