Stone, Richard, author
Routledge, 2017
Buku Teks
McKendrick, Ewan, author
Oxford University Press, 2012
Buku Teks
Thampapillai, Dilan, author
Oxford University Press, 2011
Buku Teks
Stone, Richard, author
Blackstone Press, 1996
Buku Referensi
edited by Rudolf Schlesinger
Foundation Press, 1959
Buku Teks