Fink, Peter, author
Elex Media Komputindo, 1997
Buku Teks
Gultom, Edwin Bart, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2003
UI - Tesis (Membership)
Joreskog, Karl, author
Scientific Sofware Internasional,
Buku Teks
Andrews, Mark, author
Sams, 1993
Buku Teks
Cornell, Gary, author
Andi, 1997
Buku Teks