@book { TheCaseforaProtoGospel,
    title = "The Case for a Proto-Gospel",
    subtitle = "Recovering the Common Written Source Behind Mark and John",
    author = "Gary {Greenberg}",
    year = "2022",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    doi = "10.3726/b15216",
    url = "https://www.peterlang.com/document/1057985"
}