@Book{OL17967952M,
    title: {The Protestant ethic and the spirit of capitalism.},
    author: {Max Weber and Gilbert Geis and Sebastian Guzman and James Hill and Joaquín Abellán García and Đặng Thị Nguyệt Ánh and Le Minh Ton and Tôn Lê Minh and Talcott Parsons and Benito Romero and Suzanne Barbeau and Jacques Chavy and Piero Burresi and Isabelle Kalinowski and Luis Legaz Lacambra},
    publisher: {Scribner},
    year: {1930},
    place: {New York},
}

@Book{OL12557993M,
    title: {The Theory of Moral Sentiments - Adam Smith},
    author: {Adam Smith},
    publisher: {Book Jungle},
    year: {2007},
}

@Book{OL27097182M,
    title: {A Discourse on Inequality},
    author: {Jean-Jacques Rousseau},
    publisher: {Aziloth Books},
    year: {2013},
}

@Book{OL24179917M,
    title: {The Souls Of Black Folk},
    author: {W. E. B. Du Bois and Monica M. Elbert and Walter Covell and Henry Louis Gates, Jr. and Arnold Rampersad and Prentice Onayemi and Shawn Alexander and Eugene F. Provenzo and Slingshot Books and Monty and Karl Simrock and Farah Jasmine Griffin and Héctor Arnau and Brent Hayes Edwards},
    publisher: {A. C. McClurg \& co.},
    year: {1903},
    place: {Chicago},
}

@Book{OL37821662M,
    title: {The Communist Manifesto},
    author: {Karl Marx and Friedrich Engels},
    publisher: {Project Gutenberg},
    year: {2005},
}

@Book{OL24662043M,
    title: {Democracy in America},
    author: {Alexis de Tocqueville and Gustave de Beaumont},
    publisher: {J. \& H.G. Langley},
    year: {1840},
    place: {New York},
}

@Author{OL30442A,
    name: {Alexis de Tocqueville},
    birth_date: {29 Jul 1805}
    , death_date: {16 Abr 1859}
}
@Author{OL231595A,
    name: {Gustave de Beaumont},
    birth_date: {1802}
    , death_date: {1866}
}