Walpole, Ronald E., author
ITB Press, 1995
Buku Teks
Sigit Pamungkas, author
2008
UI - Tesis (Open)
Alfa Sri Aditya, author
Universitas Indonesia, 1996
UI - Skripsi (Membership)
UI - Publikasi
edited by Roger Penn, Damon Berridge
Sage, 2013
Buku Teks