@Book{OL17778295M,
    title: {Sources of the self},
    author: {Charles Taylor},
    publisher: {Harvard University Press},
    year: {1989},
    place: {Cambridge, Mass},
}

@Book{OL7693553M,
    title: {Sources of the Self},
    author: {Charles Taylor},
    publisher: {Harvard University Press},
    year: {1992},
}

@Author{OL658092A,
    name: {Charles Taylor},
    birth_date: {1931}
}