edited by Andrew Blowers, Chris Hammett and Philip Sarre
Hutchinson Educational in association with the Open University Press, 1974
Buku Teks
Gutkind, E. A.
The Free Press of Glencoe, 1963
Buku Teks
Peter Marcuse, Ronald van Kempen, editor
Blackwell Publishing, 2000
Buku Teks
Buku Teks
Buku Teks