Hill, Ernest
Simon & Schuster, 1996
Buku Teks
Bly, Robert W.
Prentice-Hall, 1993
Buku Teks
M. Melly Kosasih, author
Program Pascasarjana Universitas Indonesia, 1993
UI - Tesis (Membership)
Buku Teks
Swann, Thomas Burnett, author
Twayne, 1964
Buku Teks