Ehrenberg, Ronald G., author
Pearsons Addison-Wesley , 2009
Buku Teks
Bloom, Gordon F.
Irwin , 1969
Buku Teks
edited by Colin A. Palmer
Variorum, 1998
Buku Teks
Marshall, F. Ray
Ill. Richard D. Irwin , 1980
Buku Teks
Taylor,Keeanga-Yamatha, author
Haymarket Books, 2016
Buku Teks