by Catherine Bauer [and others]; edited by Coleman Woodbury
The University of Chicago Press, 1953
Buku Teks
Amin, Ash
Polity Press, 2010
Buku Teks
Dahinden, Justus
Verlag Gerd Hatje, 1971
Buku Teks
Choldin, Harvey M.
McGraw-Hill, 1985
Buku Teks
Ravetz, Alison
Croom Helm , 1980
Buku Teks