Pfaff, William
The New Yorker Magazine,Inc., 1978
Buku Teks
Afif Shidqi, author
Universitas Indonesia, 2009
UI - Skripsi (Open)
Soemitro Djojohadikusumo, author
Yayasan Obor Indonesia, 1991
Buku Teks
Deliarnov, author
Rajawali, 2012
Buku Teks
Deliarnov, author
RajaGrafindo Persada, 2016
Buku Teks