edited, Werner Z. Hirsch
John Hopkins Press, 1964
Buku Teks
Hochwald, Werner, author
John Hopkins Press , 1969
Buku Teks
edited, Alberta M. Sbragia
Westview Press, 1983
Buku Teks
Pechman, Joseph A., author
Harvester Wheatsheaf, 1989
Buku Teks
Fisher, Ronald C., author
Routledge, 2016
Buku Teks