Maguire, John MacArthur
Foundation Press,, 1978
Buku Teks
Chadbourn, James H., author
The Foundation Press, Inc., 1973
Buku Teks
Cooper, Simon, author
Blackstone Press, 1997
Buku Referensi
Champion, John M.
Richard D. Irwin, 1985
Buku Teks
Cound, John J.
West , 1974
Buku Teks