Andreas Eno Tirtakusuma, author
Universitas Indonesia, 2014
UI - Disertasi (Membership)
Enschede, Ch. J., author
Alumni, 1982
Buku Teks
Marpaung, Leden, author
Sinar Grafika, 2008
Buku Teks
Marpaung, Leden, author
Sinar Grafika, 2006
Buku Teks
Marpaung, Leden, author
Sinar Grafika, 2005
Buku Teks