Quible, Zone K.
Prentice Hall International,inc, 1996
Buku Teks
Quible, Zone K.
Prentice Hall International,inc, 1996
Koleksi Publik
Locker, Kitty O.
McGraw-Hill, 2007
Buku Teks
Ewald, Helen Rothschild
Prentice Hall International, 1997
Buku Teks
Dumont, Raymond A.
Little, Brown, 1985
Buku Teks