Albert Budy, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2021
UI - Tesis (Membership)
Unesco, 1981
Buku Teks
Beevers, D. Gareth, author
Wiley Blackweel, 2015
Buku Teks
ABC Technologies, 1998'
Multimedia
Lytel, Allan, author
D.B. Taraporevala Sons, 1969
Buku Teks