Bury, Michael, author
Routledge, 2000
Buku Teks
Honolulu University of hawaii 1982 ,
Buku Teks
edited by Josep Figueras, Martin McKee
McGraw-Hill, 2012
Buku Teks
Dinda Prita Vaudika, author
Fakultas Kesehatan Masyarakat Universitas Indonesia, 2010
UI - Skripsi (Open)
Meryn, Siegfried, author
Pustaka Populer Obor, 2005
Buku Teks