Hofstadter, Richard
Columbia University Press , 1955
Buku Teks
Metzger, Walter P., author
Columbia University Press, 1969
Buku Teks
Sheldon Rothblatt
Springer, 2012
eBooks
Ver Steeg, Clarence L.
Harper & Row , 1971
Buku Teks
Touraine, Alain, author
McGraw-Hill, 1974
Buku Teks