Suparman Khan, author
Universitas Indonesia, 1996
UI - Tesis (Membership)
Steven Nugraha, author
Fakultas Psikologi Universitas Indonesia , 2019
UI - Skripsi (Membership)
Held, Virginia, author
Erlangga, 1991
Buku Teks
Umar Kayam, author
Pustaka Utama Grafiti, 1990
Buku Teks
Buchanan, James M., author
Liberty Fund, Inc., 2001
Buku Referensi