Mastering symphony
[publisher not identified], [date of publication not identified]
 Buku Teks
Birley, Sue
Mastering entrepreneurship
Financial Times Prentice Hall, 2000
 Buku Teks
Guset, Harry
Mastering japanese
Macmillan, 1989
 Buku Teks
Watson, John
Mastering electronics
Macmillan, 1990
 Buku Teks
O`Donnell, Gerard
Mastering sociology
Macmillan, 1994
 Buku Teks SO