Jones, Sydney R., author
Lembaga Studi dan Advokasi Masyarakat, 1999
Buku Teks
Niockel, James W.
Gramedia Pustaka Utama, 1996
Buku Teks
Foster, Steve, author
Oxford university press, 2012
Buku Teks
Fauzi Abdullah, author
Pustaka Sinar Harapan, 1981
Buku Teks
Embassy of the United States of America, 1998
Buku Teks