Siregar, Zofrullah
Universitas Indonesia, 1992
UI - Skripsi (Membership)
Julianti Tri Astuti
1989
UI - Skripsi (Membership)
Universitas Indonesia, 1992
UI - Skripsi (Membership)
Universitas Indonesia, 1991
UI - Skripsi (Membership)
Universitas Indonesia, 2006
UI - Skripsi (Membership)