Grimsey, Darrin
Edward Elgar, 2007
Buku Teks
Muhammad Ivan Putra Mahardika
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2017
UI - Skripsi Membership
edited by Inge Kaul and Pedro Conceicao
Oxford University Press, 2006
Buku Teks SO
Stainback, John
Wiley, 2000
Buku Teks SO
Thani, Nik Norzrul
Sweet & Maxwell Asia, 2003
Buku Teks SO