Editura de stat Pentru Literatura si Arta, t.th.
Buku Referensi
Presidencia de la Republica , 1992
Buku Referensi
Ginting, Abd. Rauf
Fakultas Hukum Universitas Indonesia, 1996
UI - Skripsi (Membership)
edited by Irene Yeung
Government Information Office, 2002
Buku Referensi
Stoica, Georgeta
Bacuresti Editura Meridiane 1989,
Buku Teks