Journal of Dentistry Indonesia, 2005
Artikel Jurnal
edited by Abbie Perry
Edward Arnold, 1996
Buku Teks
edited by Jonathan Gabe, Michael Calnan and Michael Bury
Routledge , 1991
Buku Teks SO
Nettleton, Sarah
Polity Press, 1995
Buku Teks SO
MacMillan Education Australia, 1995
Buku Teks