Artikel Jurnal
McBeth, Adam
Oxford Univ Press, 2011
Buku Teks
edited by Julie Peters and Andrea Wolper
Rouledge, 1995
Buku Teks
edited by Jeffrey F. Addicott, Md. Jahid Hossain Bhuiyan, Tareq M.R. Chowdhur
Oxford University press, 2012
Buku Teks
Vega, Connie de la
Edward Elgar, 2013
Buku Referensi