Mutia Oktavianingsih
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 2016
UI - Skripsi Membership
Buss, Claude Albert
Macmillan, 1941
Buku Teks SO
Jansen, Marius B.
Rand Mc.Nally College Publishing , 1975
Buku Teks SO
Royal Institute of International Affairs , 1939
Buku Teks SO
Willoughby, Westel W.
John Hopkins Press, 1927
Buku Teks SO