Berg, Bruce Lawrence, 1954-
Allyn and Bacon, 1992
Buku Teks
Muhammad Iqbal
Fakultas Pascasarjana, 2014
UI - Tesis (Membership)
Coffey, Alan R.
Prentice-Hall, 1990
Buku Teks
Trautman, Neal E.
Charles C Thomas Publisher, 1990
Buku Teks
Wallace, Harvey
Prentice-Hall, 2001
Buku Teks