Sweezy, Paul M. (Paul Marlor), 1910-2004
Socialism
McGraw-Hill, 1949
 Buku Teks SO
Sweezy, Paul M. (Paul Marlor), 1910-2004
Socialism
McGraw-Hill, 1949
 Buku Teks SO
Prospects
Paris : The United Nations Educational
 Majalah, Jurnal, Buletin
Sinclair, William Angus
Socialism and the individual
Robert Hale, 1955
 Buku Teks SO
Crosland, Anthony, 1918-
The future of socialism
Macmillan, 1957
 Buku Teks SO