Gray, John, author
Routledge , 1996
Buku Teks
Deutsch, Kenneth L., author
Thomson, 2009
Buku Teks
edited by Isaac Kramnick
[publisher not identified], 1969
Buku Teks
Wanlass, Lawrence C., author
Appleton-Century-Crofts, 1953
Buku Teks
Sankar Muthu
Cambridge University Press, 2014
Buku Teks