@Book{OL5705547M,
    title: {Grendel},
    author: {John Gardner and John Gardner},
    publisher: {Knopf},
    year: {1971},
    place: {New York},
}

@Book{OL17191609M,
    title: {Grendel},
    author: {John Gardner and John Gardner},
    publisher: {Ballantine Books},
    year: {1972},
    place: {New York},
}

@Work{OL280307W,
    title: {Grendel},
    author: {John Gardner and John Gardner},
    first_publish_year: {1971}
}

@Work{OL8026199W,
    title: {Long Day's Journey into Night},
    author: {Eugene O'Neill},
    first_publish_year: {1940}
}

@Work{OL474428W,
    title: {Long day's journey into night},
    author: {Eugene O'Neill},
    first_publish_year: {1956}
}

@Author{OL28035A,
    name: {Eugene O'Neill},
    birth_date: {16 October 1888}
    , death_date: {27 November 1953}
}