@Book{OL7826084M,
    title: {The Body in the Library},
    author: {Agatha Christie},
    publisher: {Bantam Books},
    year: {1987},
}

@Book{OL24214112M,
    title: {The mirror crack'd},
    author: {Agatha Christie},
    publisher: {Pocket Books},
    year: {1986},
    place: {New York},
}

@Author{OL27695A,
    name: {Agatha Christie},
    birth_date: {15 September 1890}
    , death_date: {12 January 1976}
}