UNESCO, [T.th.]
Buku Teks
Dodi Robby Hari Ismanto, author
2020
Artikel Jurnal
Tarigan, Isac Newton, author
Program Pascasarjana Universitas Indonesia, 2005
UI - Tesis (Membership)
Cambridge University Press, 2006
eBooks
Kenchington. R A
Unesco, 1984
Buku Teks