Buergenthal, Thomas
St. Paul Minn, 1988
Buku Teks
McBeth, Adam
Oxford Univ Press, 2011
Buku Teks
edited by A.H. Robertson
Manchester University Press, 1968
Buku Teks
Smith, Rhona K.
Routledge, 2010
Buku Teks
edited by Jeffrey F. Addicott, Md. Jahid Hossain Bhuiyan, Tareq M.R. Chowdhur
Oxford University press, 2012
Buku Teks