Collin, P. H., author
Peter Collin Publishing, 1997
Buku Referensi
MacIver, Robert M., author
Macmillan, 1951
Buku Teks
Ali Moertopo, author
Yayasan Proklamasi for Strategic & International Studies, 1973
Buku Teks
Carter, Gwendolen M., author
Praeger, 1973
Buku Teks
Ball, Alan R., author
Macmillan, 1974
Buku Teks