Silvestri, Linda Anne, author
Saunders Elsevier, 2008
Buku Teks
Saunders, 2008
Multimedia
Silvestri, Linda Anne, author
Saunders Elsevier, 2010
Buku Teks
Dykeman, Francis C., author
John Wiley & Sons, 1982
Buku Teks
Ballast, David Kent, author
Professional Publications, 2002
Buku Teks