Scott, Steven K.
Think, 2006
Buku Teks
Yustinus Ardianto
Obor, 2011
Buku Teks
Th. Sumartana, author
Utama Grafiti , 1993
Buku Teks
Waitley, Denis, author
Binarupa Aksara, 1994
Buku Teks
Ratna Syamsiar, author
Universitas Indonesia, 1999
UI - Tesis (Membership)