Lefebvre, Georges
Routledge, 2001
Buku Teks
Thompson, J.M.
Basil Blackwell, 1955.
Buku Teks
Carlyle, Thomas
E.P. Dutton, 1955
Buku Teks
Fukuyama, Francis
Farrar, Straus and Giruox, 2012
Buku Teks
Salvemini, Gaetano
W.W. Norton & Company, 1962
Buku Teks