Miller, John C.
Stanford University Press, 1965
Buku Teks
Lefebvre, Georges
Routledge, 2001
Buku Teks
Nash, Gary B.
Harvard University Press, 1979
Buku Teks
Fukuyama, Francis
Farrar, Straus and Giruox, 2012
Buku Teks
Jones, Howard
Franklin Watts, 1985
Buku Teks