@Book{OL26940602M,
    title: {The cruel prince},
    author: {Holly Black and Caitlin Kelly and LitJoy Crate and Holly Black},
    publisher: {Little, Brown Young Readers},
    year: {2018},
}

@Author{OL1430285A,
    name: {Holly Black},
    birth_date: {10 November 1971}
}
@Author{OL1401013A,
    name: {Caitlin Kelly},
}
@Author{OL9614605A,
    name: {LitJoy Crate},
}
@Author{OL12661242A,
    name: {Holly Black},
}