@Book{OL39803761M,
    title: {Das Kapital},
    author: {Karl Marx and Marx},
    publisher: {Henry Regnery},
    year: {1962},
}

@Book{OL6542634M,
    title: {Manifesto of the Communist party},
    author: {Karl Marx and Friedrich Engels},
    publisher: {The National executive committee of the Socialist labor party},
    year: {1898},
    place: {New York, USA},
}

@Book{OL6203293M,
    title: {Reflections on the Revolution in France.},
    author: {Edmund Burke},
    publisher: {Gateway Editions; distributed by H. Regnery Co.},
    year: {1955},
    place: {Chicago},
}

@Book{OL5913155M,
    title: {On religion},
    author: {Karl Marx},
    publisher: {Schocken Books},
    year: {1964},
    place: {New York},
}

@Book{OL28406533M,
    title: {The poverty of philosophy},
    author: {Karl Marx},
    publisher: {Charles H. Kerr},
    year: {1913},
    place: {Chic},
}

@Book{OL13998706M,
    title: {Capital},
    author: {Karl Marx},
    publisher: {Swan Sonnenschein},
    year: {1904},
    place: {London},
}

@Book{OL6462185M,
    title: {An inquiry into the nature and causes of the wealth of nations},
    author: {Adam Smith},
    publisher: {Printed for W. Strahan; and T. Cadell ...},
    year: {1776},
    place: {London},
}

@Book{OL1407753M,
    title: {What is property?},
    author: {P.-J. Proudhon},
    publisher: {Cambridge University Press},
    year: {1994},
    place: {Cambridge [England]},
}

@Book{OL6537772M,
    title: {Organization of work},
    author: {Louis Blanc},
    publisher: {University press},
    year: {1911},
    place: {Cincinnati, O},
}

@Book{OL6936991M,
    title: {Wage-labor and capital},
    author: {Karl Marx and Friedrich Engels},
    publisher: {New York Labor News Co.},
    year: {1902},
    place: {New York},
}

@Author{OL48230A,
    name: {Karl Marx},
    birth_date: {5 May 1818}
    , death_date: {14 March 1883}
}
@Author{OL1368A,
    name: {Friedrich Engels},
    birth_date: {28 November 1820}
    , death_date: {5 August 1895}
}