@Book{OL2404106M,
    title: {Islam},
    author: {John L. Esposito},
    publisher: {Oxford University Press},
    year: {1988},
    place: {New York},
}

@Book{OL2549420M,
    title: {Angels},
    author: {Billy Graham},
    publisher: {Word Books},
    year: {1986},
    place: {Waco, Tex},
}

@Work{OL6381574W,
    title: {Anne Frank},
    author: {Ernst Schnabel},
    first_publish_year: {1958}
}

@Author{OL1677992A,
    name: {Ernst Schnabel},
    birth_date: {1913}
    , death_date: {1986}
}