@Book{OL7637656M,
    title: {Best Works of Mark Twain},
    author: {Mark Twain},
    publisher: {Dover Publications},
    year: {1998},
}

@Book{OL7637879M,
    title: {The Wit and Wisdom of Mark Twain},
    author: {Mark Twain},
    publisher: {Dover Publications},
    year: {1998},
}

@Book{OL3308742M,
    title: {Warped passages},
    author: {Lisa Randall},
    publisher: {Ecco},
    year: {2005},
    place: {New York},
}

@Work{OL318782W,
    title: {The collected works},
    author: {Kahlil Gibran},
    first_publish_year: {2007}
}

@Author{OL2890A,
    name: {Kahlil Gibran},
    birth_date: {1883}
    , death_date: {1931}
}