edited and introduced by Andrew Shonfield and Stella Shaw
Heinemann Educational Books, 1972
Buku Teks
Stein, Theodore J., author
Columbia University Press, 2001
Buku Teks
edited by Eleanor Bernert Sheldon; Wilbert E. Moore
Russel Sage Foundation, 1968
Buku Teks
Bauer, Raymond A., author
MIT Press, 1966
Buku Teks
edited by Peter Dwyer, Sandra M I Shaw
Sage, 2013
Buku Teks