Stone, Richard
Blackstone Press, 1996
Buku Referensi
Dawson, John Philip
Foundation Press, 1969
Buku Teks
McKendrick, Ewan
Oxford University Press, 2012
Buku Teks
Stone, Richard
Routledge, 2017
Buku Teks
compiled and edited by Harold Shepherd and Byron D. Sher
Foundation Press, 1960
Buku Teks