Lasher, William R., author
Western College Publishing , 2000
Buku Teks
Faguet, Dmitri, author
John Wiley & Sons, 2003
Multimedia
Faguet, Dmitri, author
John Wiley & Sons, 2003
Buku Teks
by Joseph T. Straub
Gemini Books, 2000
Buku Referensi
Foulke, Roy Anderson, 1896-, author
McGraw-Hill, 1968
Buku Teks