Soin, Sarv Singh, author
McGraw-Hill, 1993
Buku Teks
Dede Pandaswita, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 1998
UI - Tesis (Membership)
Fandy Tjiptono, author
Andi Offset, 1996
Buku Teks
Besterfield, Dale H., author
Prentice-Hall, 1998
Buku Teks
Besterfield, Dale H., author
Prentice-Hall, 1994
Buku Teks