Universitas Indonesia, 2005
UI - Skripsi (Membership)
Intibuku Utama, 1971
Buku Teks
Edita Elda, author
2009
UI - Tesis (Open)
Universitas Indonesia, 1984
UI - Skripsi (Membership)
Damanik, Mochamad Yakinsyah, author
Universitas Indonesia, 1986
UI - Skripsi (Membership)