Pfund, Robert, author
Elsevier, 2005
Buku Teks
Pfund, Robert, author
Elsevier Limited, 2005
Multimedia
Shrypck, Harold
Indonesia Publishing House , 1993
Buku Teks
Shryock, Harold, author
Indonesia Publishing House , 1981
Buku Teks
Sharry, John, author
Sage Publications, 2004
Buku Teks