Truman, Harry S.
Doubleday, 1956
Buku Teks
Abdi Hamdani
Program Pascasarjana Universitas Indonesia, 2006
UI - Tesis (Membership)
Tribuana Sari
Program Pascasarjana Universitas Indonesia, 2005
UI - Tesis (Membership)
Montgomery, B.
The Word Publishing Comp, [date of publication not identified]
Buku Teks
Nino Oktorino
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 1999
UI - Skripsi (Membership)