Hechinger, Grace
Facts on File Publication, 1984
Buku Teks
Nelson, Noelle, author
How Press, 2006
Buku Teks
edited by H.H. Tucker
Facts on File, 1988
Buku Teks
Isyana Adriani, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2012
UI - Tesis (Open)
Brown, Lou
St. Martin's Griffin , 1997
Buku Teks