Siregar, Ellen Natalia, author
1997
UI - Skripsi (Membership)
Widiati, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2003
UI - Tesis (Membership)
Arief Primananda, author
2017
UI - Skripsi (Membership)
R. Widiati, author
1985
UI - Skripsi (Membership)
Universitas Indonesia, 2010
UI - Skripsi (Open)