Urquhart, Brian, author
Uppsala Dag Hammarskjold Foundation, 1996
Buku Teks
Oceana Publications, 1957
Buku Teks
Jeanne Francois, author
Universitas Indonesia, 2010
UI - Skripsi (Open)
Poniman, Farid
Hikmah, 2006
Buku Teks
Jogjakarta [t.p.] 1970
UI - Makalah dan Kertas Kerja