@book { WanderingBetweenTwoWorlds,
    title = "Wandering Between Two Worlds",
    author = "Ronald R. {Gray}",
    year = "2014",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    doi = "10.3726/978-1-4539-1325-3",
    url = "https://www.peterlang.com/document/1051100"
}