Carr, E.H. (Edward Hallet), author
Macmillan, 1950
Buku Teks
Payne, Stanley G., author
W.W. Norton, 1970
Buku Teks
Lefebvre, Henri, author
University of Minnesota Press, 2003
Buku Teks
Jarvie, Ian C., author
Routledge and Kegan Paul, 1967
Buku Teks
Carlyle, Thomas, author
E.P. Dutton, 1955
Buku Teks