Artikel Jurnal
edited by Samuel M. Turner, Karen S. Calhoun, Henry E. Adams
John Wiley & Sons, 1992
Buku Referensi
Wilson, Kate, author
Bailliere Tindall, 1997
Buku Teks
Wilson, Kate, author
Bailliere Tindal , 2005
Buku Teks
Eyet Hidayat, author
Universitas Indonesia, 2011
UI - Tesis (Open)