Hood, Christopher C.
John Wiley & Sons, 1976
Buku Teks
McGraw-Hill, 2013
Buku Teks
Snellen, I.Th.M., author
The Hague : Eleven International Publishing, 2014
Buku Teks
Bozeman, Barry, author
St. Martin's Press, 1979
Buku Teks
Kartika Mulia Sari, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2015
UI - Tesis Membership