Vega, Connie de la
Edward Elgar Publishing, 2013
Buku Referensi
McBeth, Adam
Oxford Univ Press, 2011
Buku Teks
edited by Jeffrey F. Addicott, Md. Jahid Hossain Bhuiyan, Tareq M.R. Chowdhur
Oxford University press, 2012
Buku Teks
edited by A.H. Robertson
Manchester University Press, 1968
Buku Teks
Erika De Wet and Jure Vidmar, editors
Oxford university press, 2012
Buku Teks