Boyes, William, author
South Western Cengage Learning, 2012
Buku Teks
Salvatore, Dominick, author
McGraw-Hill, 1996
Buku Teks
Salvatore, Dominick, author
McGraw-Hill, 1996
Buku Teks
Salvatore, Dominick, author
McGraw-Hill, 1993
Buku Teks
Curwen, Peter J.
Macmillan, 1974
Buku Teks