Djilas, Milovan, 1911-1995
The new class an analysis of the communist system
Frederick A. Praeger, 1957
 Buku Teks
Ulam, Adam B.
Titoism and the cominform / Adam B. Ulam
Harvard University Press, 1952
 Buku Teks
Djilas, Milovan, 1911-1995
The New class : an analysis of the communist system / by Milovan Djilas
Frederick A. Preager, 1958
 Buku Teks
Djilas, Milovan, 1911-1995
The new class: an analysis of the communist system / by Milovan Djilas
Frederick A. Praeger, 1961
 Buku Teks
Lydall, Harold
The structure of earnings / Harold Lydall
Clarendon Press , 1968
 Buku Teks