Downie, Leonard, author
Vintage Books, 2002
Buku Teks
Hartley, John, author
Routledge, 1995
Buku Teks
Firyaal Tsaabitah, author
Fakultas Ilmu Sosial Dan Ilmu Politik Universitas Indonesia, 2023
UI - Makalah dan Kertas Kerja
Stephens, Mitchell, author
Coloumbia University Press , 2014
Buku Teks
by Brian S. Brooks [and others]
Martins Press, 1992
Buku Teks