Fukuyama, Francis, author
Gramedia Pustaka Utama, 2005
Buku Teks
edited by Don K. Price
Prentice-Hall, 1960
Buku Teks
Risal Imanuel Umar, author
2015
UI - Tugas Akhir
Yohanes, author
Universitas Indonesia, 2015
UI - Tesis (Membership)
New American Library, 1972
Buku Teks