Morley, Arthur, author
English Language Book Society, 1962
Buku Teks
Srinivasan, N.K., author
New Delhi: Oxford and IBH, 1983
Buku Teks
Van Vlack, Lawrence H., author
Addison-Wesley, 1980
Buku Teks
Meier, Michael L.
Pearson Education, 2005
Multimedia
Meier, Michael L.
2005
Multimedia