Buku Teks
Gemala Dewi, author
Prenada Media, 2005
Buku Teks
Pasaribu, Evy Lasma, author
Universitas Indonesia, 1994
UI - Skripsi (Membership)
Universitas Indonesia, 2000
UI - Skripsi (Membership)
Hari Purwanto, author
Universitas Indonesia, 2001
UI - Tesis (Membership)