Shaughnessy, John J., author
McGraw-Hill, 1997
Buku Teks
Shaughnessy, John J., author
McGraw-Hill, 2003
Buku Teks
Craig, James R., author
Saunders, 1986
Buku Teks
Gaultney, Jane F., author
California, 2007
Buku Teks
Gaultney, Jane F., author
California, 2007
Buku Teks