Sihombing, Herdiana Christanty, author
Universitas Indonesia, 2009
UI - Skripsi (Open)
Irna Nursanti, author
2015
UI - Disertasi (Membership)
Ali Baziad, author
UI-Press, 2005
UI - Pidato
Hunter, Myra
Penguin Books , 1995
Buku Teks
Petras, Kathryn
Avon Book , 1999
Buku Teks